Answer:During sexual reproduction, two haploid cells, called gametes, fuse to form a diploid cell called a zygote. In animals, the gametes are sperm and eggs, and the process by which they fuse is called fertilization. In plants, the gametes are produced by the male and female reproductive cells, called the microgametes and the megagametes, respectively, and the process is called syngamy.
During fertilization in animals, the sperm penetrates the egg, and the nuclei of the sperm and egg fuse, combining their genetic material. This forms the diploid zygote, which then undergoes cell division to form a multicellular organism.
In plants, the fusion of the microgametes and megagametes occurs at the tip of the pollen tube and the egg cell. This process is called double fertilization, which leads to the formation of a diploid zygote and a triploid cell called the endosperm, which provides nourishment for the developing seed.
In both case, sperm and egg or micro and mega gametes are the structure fusing to form diploid zygote during sexual reproduction.
Select the vertebrate taxon or taxa whose origin(s) involved duplication of Hox genes.
Select all that apply.
a) Gnathostomes
b) The genus Homo
c) Craniates
Gnathostomiases The vertebrate binomial nomenclature or taxa with origin(s) involves Hox gene duplication are known as craniate.
Why does gnathostomiasis occur?Several species species parasitic worms (nematodes) of the genus Gnathostoma are responsible for human gnathostomiasis. Although it has been identified in other parts of Asia, South and Central America and also some regions of Africa, the illness is most frequently discovered and diagnosed in Southeast Asia.
Gnathostomiasis is detected in what ways?Based on clinical signs, gnathostomiasis in humans can be diagnosed. And symptoms (intermittent dermal or cutaneous migrating swelling), a raised blood eosinophil level, and a pertinent exposure history (residing in or visiting areas where the disease is endemic; consuming raw or undercooked foods fish, frog, or chicken)
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I need someone to explain this
Light energy is captured in the process of photosynthesis which stores the energy in organic molecules to be used in the process of respiration.
What is Photosynthesis?This is referred to as the process in which green plants manufacture food in the presence of sunlight which is stored in the molecular bonds of organic molecules such as sugars.
It is used during the process of respiration by cells of the body and it involves the production of energy from the oxidation of complex organic substances as result of the body taking in oxygen and giving off carbon dioxide which is therefore the reason why they were chosen as the correct choices.
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What is the percentage of having tall pea plants in the offspring?
The percentage of having tall pea plants in the offspring is about 75%
A person who has two copies of the allele that codes for the dominant characteristic is said to be homozygous-dominant for that trait. This allele, which is sometimes referred to as the "dominant allele," is typically denoted by the uppercase version of the letter used for the associated recessive characteristic (such as "P" for the dominant allele producing purple flowers in pea plants). An organism's genotype is symbolized by a doubling of the trait's symbol, such as "PP," when it is homozygously dominant for that trait.
Refers to a trait that can only be seen in homozygous individuals; it is a trait that is often hidden by other inherited qualities but persists in populations of heterozygous individuals.
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What conclusion is on Mendelian genetics?
The conclusion of Mendelian genetics emphasizes particulate factors which are the determinants of inherited traits. These factors are referred to as genes. Each parent's cell contains a pair of genes for each trait under investigation. One allele for the dominant phenotype and one for the recessive phenotype are present in the F1 offspring of a cross of two pure lines.
In the 19th century, Mendel performed thousands of experiments with pea plants. He came to the further conclusion that genes are inherited as distinct, paired units from each parent. Mendel studied how parental genes diverged and whether they manifested in the offspring as dominant or recessive traits. The passing of mathematical patterns from one generation to the next was something he was aware of.
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Your pet turtle and your pet bird look and act differently. What has DNA evidence revealed about the relatedness of reptiles and birds
Some reptiles are more closely related to birds than to other reptiles. The several Hawaiian Honeycreeper species are all descended from a single type of North American bird.
They now have various beaks, consume various meals, sing various tunes, and reside on various islands.
Many years of research have revealed that birds' predecessors were bird-like dinosaurs (visit the Dinobuzz page for more on this). Despite the fact that birds resemble other living reptiles, they are most closely linked to alligators and crocodiles and indisputably belong in the reptile group.
The strong evidence comes not only from fossilized bones and skeletal similarities, but also from fossilized soft tissue, particularly feathers. Many dinosaurs possessed distinguishing bird-like feathers rather than merely a body covering.
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Why are plants unable to grow at the bottom of lakes the water is colder at the bottom sunlight does not reach the bottom?
Because the water is so deep. There are no rooted plants to be found at the bottom of lakes because sunlight cannot penetrate that far.
Lakes obtain their water supply from three different sources: precipitation; rivers and streams; and underground water.
The size of lakes can range from very small to very large. They can be quite deep, or they can be only moderately so. Ponds are frequently used as a synonym for lakes that have depths of less than six or seven feet and support plant life on the bottom.
The changing of the seasons can bring about significant fluctuations in temperature for the lakes that are found in certain temperate regions.
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What is the role of mucus and cilia in the respiratory tract?
The role of mucus and cilia in the respiratory tract is to block foreign particles from entering the nose.
The respiratory tract consists of the nasal cavities, pharynx, larynx, trachea, bronchi, bronchioles, alveoli and lungs. The nasal cavity in the respiratory system has a function to continue the incoming air then leads to the throat.
In the nasal cavity there is a mucous membrane which is the receipt of the mucous membrane and cilia of the nose hair which is very fine. Mucus is made of mucin and water which forms a sticky gel whose role is to trap bacteria, viruses, dirt and dust from outside so it doesn't enter the nose. While the cilia play a role in filtering air through their fine hairs which will prevent dirt from entering the nose.
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How did Lucy get a black eye?
Ricky recalls giving Lucy a black eye by mistake, as do the Mertzes. Ricky recalls giving Lucy a black eye by mistake, as do the Mertzes.
Executives recommended Lucy sit behind chairs or tables to conceal her pregnancy. Not Lucy," was his reply. When Ricky throws a book Lucy catches the first shiner, but Fred and Ethel hear Lucy and Ricky reading the obscene book aloud and don't believe Lucy's story. In "The Crying Dame," Lucy's eyes are hidden by her hair because her parents were bothered by her habit of mindlessly staring at them and let her to grow it out in the hope that she would stop.
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What does XY mean in pedigree?
In a pedigree, XY represents a male. Squares are also used to represent men. A pedigree analysis is a chart that depicts the inheritance of genes from parents to offspring in a family tree.
Linkage refers to the phenomenon of gene inheritance and the retention of parental gene combinations in offspring. The genes that are found on the same chromosome and are inherited together are known as linked genes, and the traits that they control are known as related traits.
A gene is a collection of deoxyribonucleic acids (DNA) that is passed down from parents to children. A gene is made up of many nucleotides that code for different proteins. The DNA contains the genetic information required for the proteins.
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Which feature of the kinetics of L-Alanine transport would provide evidence that DOM is an important source of nutrients under low-food conditions?
High affinity transport (Kt) of L-Alanine
-Under low food conditions, the capacity of transport is irrelevant as no transporters are saturated with L-alanine
-However, the transporter's affinity for L-alanine would be important as only HIGH AFFINITY transporters will be able to facilitate L-alanine uptake at low concentrations
High affinity transport (Kt) of L-Alanine feature of the kinetics of L-Alanine transport would provide evidence that DOM is an important source of nutrients under low-food conditions.
This biochemistry question is categorized as "Assemblies of molecules, cells, and groups of cells within single cellular and multicellular organisms" in terms of its subject matter. The answer to this issue is A because no transporters are saturated with L-alanine under low-food conditions, making the transport capacity unimportant. Only high affinity transporters would be able to assist L-alanine uptake at low concentrations, hence the transporter's affinity for L-alanine would be crucial.
Because you are expected to utilize your understanding of transport kinetics to forecast the characteristics of transport that would be significant under low L-alanine conditions, this question falls under the category of scientific reasoning and problem solving.
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If a genotype i it heterozygou tate reult in white fur color, what doe it tell u about the white fur trait - i it a dominant trait or receive trait. Explain breifly
If a genotype it heterozygous trait result in white fur color, it tells you that the white fur trait it is a dominant trait.
One copy of an allele, which might come from just one parent, is called a dominant allele and results in a dominant phenotype in individuals. Having two copies of a recessive allele, one from each parent, is necessary for a recessive phenotype to develop. The dominant phenotype of a gene is present in an individual who carries both one dominant and one recessive allele. Generally speaking, they are referred to as "carriers" of the recessive allele because the recessive allele is present but the recessive phenotype is absent.
When estimating a person's likelihood of acquiring particular phenotypes, particularly genetic illnesses, dominant and recessive inheritance are helpful concepts to understand. is a dominant trait.
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What are the 5
qualifications for
something to be
experimented on
scientifically?
please help lol
The five components of scientific method are: observations, questions, hypothesis, methods and results. Following scientific method procedure not only ensures that experiment can be repeated by other researchers, but also that the results garnered can be accepted.
1. Define a Question to Investigate
As scientists conduct their research, they make observations and collect the data. The observations and data often lead them to ask why something is the way its
2.Make Predictions
Based on their research and observations, scientists will often come up with hypothesis. A hypothesis is possible answer to a question.
3. Gather Data
Evidence is needed to test prediction. There are several strategies for collecting evidence, or data. Scientists can gather their data by observing the natural world, performing an experiment in laboratory, or by running mode
4. Analyze the Data
Scientists organize their data in tables, graphs, or the diagrams. If possible they include relevant data from other sources
5. Draw Conclusions
Based on whether or not their prediction came true scientists can then decide whether evidence clearly supports or does not support hypothesis
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Suzie has a bacterial infection that she caught after she had previously cut her hand. What category of infection is this
This category of infection is known as secondary infection, an infection that occurs during or after treatment for another infection.
A secondary infection is an infection that takes place for the duration of or after remedy for any other infection. It can be because of the primary remedy or through adjustments withinside the immune system. Two examples of a secondary infection are: Getting a vaginal yeast contamination after taking antibiotics to deal with an contamination because of bacteria. Secondary infection takes place for the duration of or after remedy of a number one infection due to the fact the regular bacterial vegetation is destroyed, permitting yeast to flourish. The immune device protects the frame from doubtlessly dangerous substances.
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Which of the following molecule makes the largest contribution to the biomass of a tree? O NADPH O H20 O CO2 O Nutrients/sol
CO2 molecule makes the largest contribution to the biomass of a tree.
In the context of ecology, biomass refers to live species, whereas in the context of bioenergy, biomass refers to materials from recently living (but now dead) organisms. There are differences in how biomass is defined in the latter situation, such as exclusively from plants plants and algae, or plants and animals. Plants provide the great bulk of the biomass utilised in bioenergy. Bioenergy is a form of renewable energy that has the potential to help mitigate climate change.
Because we can always grow more trees and food, and garbage will always exist, biomass is a renewable energy source. Wood, cereals, dung, and some waste are examples of biomass fuels.
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What conclusions can be drawn cross I and cross II? explain how the data support your conclusions for each other
Cross I and Cross II obey the law of dominance and the law of segregation, respectively, according to the mendelian pattern of inheritance.
The F1 has only shown a single dominant trait when mating with two pure breeding Geno types. By selfing two F1 parents, it was also discovered that the mono hybrid F2 ratio of 3:1 is followed by the progeny population.
The phenotype ratio of the dihybrid test cross is 1:1:1:1 or
The dihybrid test cross ratio's observed and predicted results do not significantly differ from one another.
Number of phenotypes Equals degrees of freedom -1= 4-1= 3
Critical Chi square value with 3 degrees of freedom and 5% level of the table significance is 7.82.
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Note: The missing table in the diagram is given bellow,
What are 4 examples of natural selection?
Answer: rat snake is one the second one is peppered moth warrior ant and last but not least is peacock
Explanation: Because there are some type of animals tat are for the nature selection some are insect insects like moths
The process of comparing currently experienced visual input with past visual
memories takes place in
9
a) the corpus callosum.
b) the thalamus.
c) the cerebellum.
d) association areas.
The process of comparing currently experienced visual input with past visual memories takes place in association areas.
The part of the cerebral cortex that processes visual information is called the visual cortex. The occipital lobe is where it is situated. The visual cortex receives sensory information coming from the eyes after passing through the lateral geniculate nucleus of the thalamus. The primary visual cortex, also known as visual area 1 (V1), Brodmann area 17, or the striate cortex, is the region of the visual cortex that receives sensory information from the lateral geniculate nucleus. The visual areas 2, 3, 4, and 5 (also known as V2, V3, V4, and V5 or Brodmann area 18 and all of Brodmann area 19) make up the extrastriate regions.
A visual cortex exists in the left hemisphere of the brain as well as the right.
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Hurry HELP ME WITH THIS PLEASE!!!!!
The values for the speed of the scientists and the distance time graph are found as follows;
6. Please find attached the required distance time graph for each scientist
7. Newton's speed is about 1.[tex]\overline{1}[/tex] m/s
Madam Curie's speed is 2.5 m/s
Tyson's speed is 1.[tex]\overline{428571}[/tex] m/s
8. Madam Curie won the race, Tyson was second and Newton was third
9. The slope of the lines on the graphs are
The slope on Newton's graph = 1.[tex]\overline{1}[/tex]
Slope on Madam Curie's graph = 2.5
Slope on Tyson's graph = 1.[tex]\overline{428571}[/tex]
What is the slope of a linear graph?The slope of a graph is the ratio of the rise to the run of the line on the graph.
The specified information in the question are as follows;
The time it takes Newton to complete the 10 meters walk = 9 seconds
The time it takes Madame Curie to complete the distance of 10 meters = 4 seconds
The time it takes Tyson to complete the 10 meter distance while balancing the apple on his head = 7 seconds
The formula for the speed is; Speed = Distance/time
[tex]Speed = \dfrac{Distance}{Time}[/tex]
Distance = Time × Speed
Therefore, distance is directly proportional to the time of travel at a specified speed
The graph of the distance to time is therefore a straight line passing through the origin.
The coordinate of the origin (0, 0) is a point on the graph of each person.
The other point are specified by the value, y = 10 meters, and t as follows;
The points on the graph of Newton are (9, 10), (0, 0)
Newton's speed = 10 m/(9 s)= 1.[tex]\overline{1}[/tex] m/s
The point on the graph of Madam Curie are (4, 10), (0, 0)
Madam Curie's speed = 10 m/(4 s) = 2.5 m/s
Points on the graph for Tyson are (7, 10), (0, 0)
Tyson's speed = 10 m/(7 s) = 1.[tex]\overline{428571}[/tex] m/s
Please find the distance vs. time graph for each scientist created with MS Excel
7. The formula for the speed of each scientist is presented as follows;
[tex]Speed = \dfrac{Distance }{Time}[/tex]
Newton's speed = 10 m/(9 s) = 1.[tex]\overline{1}[/tex] m/s
Madam Curie's speed = 10 m/(4 s) = 2.5 m/s
Tyson's speed = 10 m/(7 s) = 1.[tex]\overline{428571}[/tex] m/s
8. The winner of the race is the scientist with the highest speed, who completes the 10 meter distance in the shortest time, which is Madam Curie
The scientist that was second is the scientist with the second fastest time, which is Tyson
The scientist that was third is Newton
9. The slope of the line is equivalent to the speed of each scientist, therefore;
The slope for Newton's distance time graph is 1.[tex]\overline{1}[/tex] m/s
Slope for the graph for Madam Curie is 2.5
Slope for the distance to time graph for Tyson is 1.[tex]\overline{428571}[/tex]
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What is a summary of the nitrogen cycle?
What color light does a leaf reflect?
The specific colors of light that a leaf reflects depend on the pigments present in the leaf. Chlorophyll, which is the pigment primarily responsible for the green color of leaves.
leaf reflects green light and absorbs other colors of the visible spectrum such as blue and red. Carotenoids, which are pigments that give leaves their yellow and orange colors, leaf reflects yellow and orange light. And finally, anthocyanins which are pigments that give leaves their red, purple and blue colors, leaf reflects red, purple and blue light. Additionally to these pigments, other substances on the leaf surface can also affect the light leaf reflects. It's worth noting that while leaves reflect visible light, they also reflect other types of light such as near-infrared and ultraviolet, but these are not visible to the human eye.
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How would this model be altered in non-industrialized countries?
A No change due to a drop in both plant photosynthesis and respiration.
B Balanced due to the reduced combustion of fossil fuels.
C There would be little change in any sinks or resources; no change to model.
D Unbalanced due to the increase in plant sinks.
B Balanced due to the reduced combustion of fossil fuels would this model be altered in non-industrialized countries.
What issues do the newest industrialised nations face?Emerging industrialised nations have a challenge. They must invest a sizable sum of money if they wish to keep up their industrialisation trend. Cities need to grow, transportation needs to be as effective as it can be, and new roads need to be built.
Based on nutrition, health, education, and literacy metrics, there is a lack of human resources. Economic vulnerability, as evidenced, for instance, by fluctuations in agricultural production, exports of commodities and services, and the proportion of the population that is displaced by natural disasters.
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_________ and __________ occupy two spots within the same food chain. thermophiles and pitcher plants Venus flytraps and pitcher plants Venus flytraps and thermophiles
Venus flytraps and pitcher plants occupy two spots within the same food chain.
What is food chain?
A food chain is a linear sequence of organisms in which nutrients and energy are transferred from one organism to another. This happens when one organism consumes another. It starts with producing organisms, follows the chain, and ends with decomposing organisms.
In this case, carnivorous plants are carnivorous plants that can catch and eat small animals and are eaten by larger animals.
Similarly, the Venus flytrap is a plant that catches and eats small animals and can be eaten by larger animals.
hence, it can be concluded that Venus flytraps and pitcher plants are correct answer that says they occupy two spots within the same food chain.
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Is medical a fixed or variable expense?
Medical is a variable expense.
Medical expenses include all costs required for the diagnosis, mitigation, or treatment of disease or injury. Medical expenses include things like health and dental insurance premiums, doctor and hospital visits, co-pays, prescription and over-the-counter medications, glasses and contacts, crutches, and wheelchairs, to name a few.
Medication and supplies are examples of variable costs because they vary according to the quantity and severity of patients treated. The majority of hospitals have a limited amount of operational flexibility, unlike regular businesses that can shift operations to reduce fixed costs.
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What 6 things do bacteria need to grow and survive?
The six things which bacteria need in order to grow and survive are food, time, temperature, acidity, oxygen and moisture.
Bacteria are basically single-celled microorganisms which are able to live and survive in a wide range of conditions. Bacteria are found almost everywhere in the environment including inside our own bodies.
Bacteria require six basic conditions in order to survive which include food, time, temperature, acidity, oxygen and moisture. Food or nutrition supply allows bacteria to grow. Bacteria multiply in number by dividing over time.
Different types of bacteria need different temperatures to grow. Most bacteria are able to thrive in low acidity or neutral environments but there also a lot of bacterial types which can survive in a wide range of pH. Some bacteria are able to thrive in the absence of oxygen while some type of bacteria require oxygen in order to grow. Moisture also boosts bacterial growth.
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A biologist is interested in studying the effect of growth-enhancing nutrients and different salinity (salt) levels in water on the growth of shrimps. The biologist has ordered a large shipment of young tiger shrimps from a supply house for use in the study. The experiment is to be conducted in a laboratory where 10 tiger shrimps are randomly placed into each of 12 similar tanks in a controlled environment. The biologist is planning to use 3 different growth-enhancing nutrients (A, B, and C) and two different salinity levels (low and high). List the treatments that the biologist plans to use in this experiment. Using the treatments listed in part (a), describe a completely randomized design that will allow the biologist to compare the shrimps' growth after 3 weeks. Give one statistical advantage to having only tiger shrimps in the experiment. Explain why this is an advantage. Give one statistical disadvantage to having only tiger shrimps in the experiment. Explain why this is a disadvantage.
a) The treatment groups are
1) Three different Growth-enhancing nutrients A, B and C
2) Salinity levels at two different levels low and high
b) Experimental units : Young tiger Shrimps
c) There are two independent variables
1) Salinity levels
2) Growth enhancing nutrients
d) Response variable : Growth of shrimps
A growth curve is a graphical depiction of a phenomenon's evolution through time. A growth curve might be a graphic that shows the rise in population of a country over time. The availability of nutrients and energy is one of the most important variables for growth.
Temperature, moisture, pH levels, and oxygen levels are the four key physical and chemical conditions regulating microbial growth. Microbial proliferation is influenced by intrinsic, extrinsic, and implicit dietary components, as well as diverse food processing processes. These variables influence microbial growth in food as well as the specific metabolic pathways that microbes utilise to create energy and metabolic byproducts.
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When an endospore germinates, it gives rise to two daughter cells called vegetative cells.
true/false
When an endospore germinates, it creates two daughter cells that are referred to as vegetative cells. Members of the genera Streptomyces are essential to the environment because of their capacity to break down a range of chemicals.
What does "germination" actually mean?Germination is the action of seeds developing into new plants. First, the environment must support the seeds growing into new things. Usually, factors like the seed's depth, the water's accessibility, and the temperature all affect this.
What really is seed germination in biology?An embryonic axis (usually the radicle) emerges from the seed coat at the end of a series of events that begin with hydration and constitute the process of seed germination.
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In toxicity testing, the dose of a chemical above which there is a measurable decline in the health of the organism being tested is referred to as
In toxicity testing, the dose of a chemical above which there is a measurable decline in the health of the organism being tested is referred to as the toxicity threshold.
A level of the dose above which the toxic effects of the dose can be observed in an organism is known as the toxicity threshold.
Below the threshold dose, no toxic effects are observed. Toxicity testing, also referred to as safety testing or toxicity analysis, is the study of the extent to which an interested substance adversely affects an organism’s normal functions, based on exposure time, exposure route, and concentration of the substance.
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The ____________ (pipe/vent) is a long tube in the ground that connects the magma chamber to Earth’s surface.
The pipe is a long tube in the ground that connects the magma chamber to the Earth's surface. Magma leaves the volcano through the vent and becomes lava.
What is Magma chamber?A magma chamber is a large pool of liquid rock which is present beneath the surface of the Earth. The molten rock, or magma, in such a chamber is comparatively less dense than that of the surrounding country rocks, which produces buoyant forces on the magma that tend to drive it upwards.
The magma moves up through a pipe, a long tube in the ground which connects the magma chamber to the Earth's surface. The pipe is the tube which connects the magma chamber to the vent. Molten rocks and gases leave the volcano through an opening called as the vent.
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in general how is the number of offspring produced by an animal related to the amount of time and energy it invests in caring for its young
Answer: The amount of time parents spend raising their children decreases with increasing fecundity
Explanation:
Fecundity is the capacity to have children. It may also be used to characterize an organism's rate of reproduction. The level of parental care provided is frequently correlated with the number of offspring produced. Generally speaking, the amount of time parents spend raising their children decreases with increasing fecundity. Animals can only use a finite amount of energy for reproduction.
Duchenne muscular dystrophy (DMD) is a recessive, sex-linked disorder carried on the X chromosome. If a woman who is a carrier of DMD and a man without the disorder have children, which outcome is possible?
a. All of their sons and half of their daughters could have DMD.
b. Half of their sons and half of their daughters could have DMD.
c.Half of their sons and none of their daughters could have DMD.
d. None of their sons and half of their daughters could have DMD.
Answer:
C. Half of their sons and none of their daughters could have DMD.
Explanation:
DMD is a recessive disorder carried on the X chromosome and it is sex-linked. This means that the gene for DMD is located on the X chromosome and it affects mostly males.
If a woman is a carrier of DMD, it means that she has one copy of the mutated gene and one normal copy, and she does not show any symptoms of the disorder.
If a man without the disorder has children with this carrier woman, half of their sons will inherit the mutated X chromosome from the mother. Therefore, they will have the disorder and half of their sons could have DMD.
Since, Females have two X chromosomes, and therefore, if a daughter inherits the mutated X chromosome from the mother, the second X chromosome will be normal which will help in compensating the effects of the mutant one, hence they will be carrier of the disorder but will not show any symptoms. So none of their daughters could have DMD.
So, the outcome is: C. Half of their sons and none of their daughters could have DMD.
Answer:D
Explanation:
I think it is D because only the mother had it and not the father. I don't think the father could get DMD through sex either. So I think that none of their sons and half the daughters could have DMD because they inherited it from the mother.