Why is natural selection not random

Answers

Answer 1

Answer : because natural selection helps certain animals to adapt to their current environment

Explanation:


Related Questions

3. What might happen to the ecosystem if this population were removed?

Answers

Answer:

More predators kill more prey, which, along with food scarcity, decreases the population.

Explanation:

Answer: ''Population Explosions The most obvious result of the removal of the top predators in an ecosystem is a population explosion in the prey species. ''

Explanation:

If a chromosome comes apart because it is not well attached at the center, 1 point
then there is most likely a problem with the

centromere
chromatids
chromatin
gene

Answers

Answer: The most problem is likely with chromatin

Explanation:

If a chromosome comes apart because it is not well attached at the center, The most problem is likely with chromatin.

What is chromosome ?

A chromosome is  a thread-like structure present in the nucleus of cells such as both prokaryotic and eukaryotic cell and it is made of a molecule of DNA (Deoxyribonucleic acid) and histone proteins.

It is composed of three components, DNA, proteins and RNA,  amount of the DNA content ranges from 30 to 40 %, the amount of proteins from 50 to 65%, and small amount of RNA from 1 to 10%.

Two types of protein present in DNA such as histone and non-histones proteins, histone constitute large amount (90% of total protein), whereas non-histone is present in small amount (around 10% of total protein).

The histone protein is basic, whereas, the DNA is acidic, so it can be neutralized; DNA in chromosome  is present in two forms such as Euchromatin and Heterochromatin.

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HELPPP!!! I'm confused!!

Answers

option c

Glycolysis , Krebs cycle , electron transport chain

The codon GAG becomes GTG due to a point mutation in the DNA, affecting the structure of the protein hemoglobin. What effect does this mutation have on the individual? WILL GIVE BRAINLIEST
The individual suffers from sickle cell anemia.

The individual suffers from myotonic dystrophy.

The individual suffers from Fragile X syndrome.

The individual suffers no negative effects.

Answers

i believe it to be the first one

Answer:

The individual suffers from sickle cell anemia.

Explanation:

Deformed red blood cells occur in 1 in 500 African Americans. This is caused due to a gene mutation called point mutation that alters the structure of the red blood cell. This alteration affects the cell's ability to carry oxygen.

The population of most cities are numbered in _____________

Answers

Explanation:

muchos miles, y aveces cientos de miles

On a hot, steamy, summer day, Kelly noticed that the outside of her glass of iced tea was very wet. She wondered if her glass was leaking. What do you think?

Answers

Kelly has noticed condensation which is water which collects as droplets on a cold surface when humid air is in contact with it.

all of the following are nucleus acids , except
a - adenine
b - iodine
c - guanine
d - cytosine

Answers

Answer:

iodine

Explanation:

Iodine is a chemical not a base. There are only 4 nucleus acids and these are adenine, thymine, cytosine and guanine.

Compare the palisade layer and the spongy layer of the mesophyll. Of the two layer, which layer has more cells?

Answers

Answer:

Palisade cells are packed tightly together, and most of the plant's photosynthesis is carried out in this sub-tissue. Moreover, cells in palisade mesophyll have a characteristic cylindrical shape and many chloroplasts. In spongy mesophyll cells, there are many air spaces, and the cells have slightly thinner cell walls.

Hope it helped!!!

Explain how form and function are related in human cells. Include examples.

Answers

Answer:

Many human cells are specialized in form and function because each cell in the body carries out life processes that help the human body to survive. For example, nerve cells have long projections that help to carry electrical messages to other cells.

Describe how you will estimate the rate of photosynthesis.

Answers

Explanation:

there are various methods to measure photosynthesis: Uptake of CO2 by plants: Since CO2 is needed for photosynthesis, measuring how much of it is taken up by the plants gives us information on how much of photosynthesis is happening. Release of O2: The amount of O2 produced during photosynthesis can be measured.

Estimation or measuring the rate of photosynthesis can be done by:

by the production of oxygenthe uptake of carbon dioxideIndirectly by an increase in biomass.

The rate of photosynthesis is a gross measure of the rate at which a plant captures radiant energy and fixes it in organic carbon compounds. It can be estimated by:

Depletion of the substrate that is carbon dioxide, has been used or how much water is used.the accumulation of oxygen is a measure of the rate of reaction.measure the rate of photosynthesis in leaves by observing the release of oxygen

Thus,

Estimation or measuring the rate of photosynthesis can be done by:

by the production of oxygenthe uptake of carbon dioxideIndirectly by an increase in biomass.

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please answer please, If we have a male hemophiliac (such as Leopold) marry a normal female, is there any way to have sons who have hemophilia? Provide a justification for your response.

Answers

Yes, hemophilia is a genetic condition, which means it can be genetically passed down to a male child, even if only one parent is a hemophiliac. The condition is also more common in male children, and is a sex-linked recessive disorder, and is carried on the X chromosome. The mother could also have the gene without actually having the disorder, so she could possibly be a carrier without knowing it, so it is possible for their son to have hemophilia, even if the dad is the only one with the gene.
Hope this helps!!

Soil erosion can be BEST prevented by

- Heavily watering the vegetation on the slope

- Increasing the slope of the land by adding more soil

- Building terraces into the sides of a slope

- removing grass from the steepest slope.

I need help!!

Answers

Answer: Following are some of the methods of soil erosion prevention: Plant trees on barren lands to limit erosion of soil. Add mulch and rocks to prevent the plants and grass underneath to prevent soil erosion. Mulch matting can be used to reduce erosion on the slopes.

Answer:

Building terraces into the sides of a slope

Im stuck in this question if you know please comment

Answers

Answer:

C

Explanation:

meiosis increases the genetic variability due to mixing of genetic material between chromosomes.

it produces genetic variation by a process known as recombination.

What is the process by which an organism undergoes a dramatic change in form called?
1. Morphology
2. Metastasis
3. Photosynthesis
4. Metamorphosis

Answers

Metamorphosis through which the insect develops by four distinct stages: egg, larva, pupa, adult. A type of metamorphosis in which an organism's transformation is so dramatic that it is difficult to recognize the relationship between the larva and adult form.

Option 4) Metamorphosis

Answer:

4. Metamorphosis

What sort of evidence would support at least one of the components of cell theory ? a Rocks and other non-living things are not composed of cells b A microscope is necessary to make observations of nearly all cells c Cells are observed converting one form of energy into another d The origin of all cells can be traced to previous or pre existing cells

Answers

Answer:

D

Explanation:

The correct answer would be that the origin of all cells can be traced to previous or pre-existing cells.

According to the cell theory which is made up of three parts;

The cell represents the basic unit of all life.All living organisms are made up of cells.Cells do not arise spontaneously, but only from pre-existing cells.

Hence, the discovery that the origin of all cells is traceable to previously existing cells supports the latter part of the cell theory.

The correct option is, therefore, D.

How can you determine the number of bonds an atom can make

Answers

Answer:

The number of bonds for a neutral atom is equal to the number of electrons in the full valence shell (2 or 8 electrons) minus the number of valence electrons. This method works because each covalent bond that an atom forms adds another electron to an atoms valence shell without changing its charge.

The appendix, an extension of the large intestine appears, although this is debated, to have little
function in humans. What is the appendix an example of in terms of evidence for evolution?​

Answers

Answer: Vestigial organ

Explanation:

Vestigial organs are those organs which were functional in ancestral organisms belonging to the same species but due to the course of evolution of body forms they become non-functional. They can be found in the body either in the same form as used to appear in the ancestors or in rudimentary or degenerated forms.

The human appendix is one of the examples of vestigial organs. It looks like a narrow tube which forms a link with a colon of the large intestine. It was functional in human herbivorous ancestors as it used to help in digestion of variety of vegetables and other plant products. The change of diet along with due course of evolution caused the appendix to become useless. But the appendix physical form remained the same in humans.

What is the the process responsible for the synthesis of proteins and mention the cellular structure where the genetic program responsible for this synthesis is located.

Answers

Answer: Translation

Explanation:

During the transcription the double stranded DNA act as a separate template  strand to produce mRNA molecule. The mRNA molecule encode for amino acid chain that collectively forms the protein. The ribosomes are the sites of protein synthesis the mRNA get attached to the ribosome. Within the ribosome the rRNA molecule instruct the catalytic steps for the synthesis of protein. The amino acid sequence or chain gets stitched together to form the protein.

what reaction is degradative

Answers

Simple sugar dehydration–fragmentation products, such as derivatives of furans, pyrones, cyclopentenes, carbonyl compounds, or acids

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please brainliest :)

Answer:

Degradation reactions reduce the number of atoms in a molecule through a specific type of chemical transformation.MARK ME AS BRAINLIST

PLZ HELP I"LL GIVE BRAINLIEST

Answers

Answer:

gotchu

Explanation:

1. His symptoms consist of difficulty walking and an abnormal gait (pattern of movement such as walking, running, etc)

2. a. one purpose of the blood test was to test his creatine kinase enzyme to see if there were any medical conditions connected to the way he was walking and why it was abnormal

b. the other purpose is to be sure that he has something wrong with his gait. If he does have a medical condition, it was best to see if he had it early on to treat it faster

3. the function of dystrophin gene connects to the cytoskeleton of a fiber which has to do with brain function; we need that to walk. For DMD, that is a condition that alters the way people walk.

4. DMD is inherited from family's genes, so he got it from his birth family probably from his dad's part of the family as DMD effects men more than women

5. It is pretty likely as this medical condition is inheritably passed on. It is likely that his grandchild will get DMD

6. To treat DMD to the best of the ability since there isnt a cure, they could participate in physical therapy and steroids

can y’all help me please? thanks :)

Answers

Should be the 3rd answer choice !!

Answer:

to protect you from mRNA vaccines

1. Which statement is NOT true?

a. Metals tend to lose electrons and form cations, or positive ions.

b. Nonmetals tend to gain electrons and form anions, or negative ions.

c. Ionic bond is formed between two metals or two nonmetals.

d. Ionic bond is formed between a metal and a nonmetal.

Answers

Answer:

c.Ionic bond is formed between two metals or two non metals.

The answer is C-Lonic bond is formed between two metal or two nonmetals

What will happen if you cross a white (bb) rabbit with another white (bb) rabbit?

Answers

Yes that’s absolutely right

PLEASE ANSWER ALL QUESTIONS! THANKS!

Which of the following statements about salinity is true?
Question 1 options:

Ocean water near areas with low evaporation has higher salinity.


Ocean water in regions with high levels of precipitation has higher salinity.


Ocean water near rivers has a lower salinity.


Ocean water in areas with high humidity has a higher salinity



How are latitude and temperature related?








Question 2 options:

Lower latitudes will have warmer water because it is closer to the equator.


Higher latitudes will have warmer water because it is closer to the equator.


Higher latitudes will have warmer water because it is closer to the poles.


Lower latitudes will have warmer water because it is closer to the poles


How does salinity vary with freezing and melting?









Question 3 options:

Both freezing and melting decrease salinity.


Both freezing and melting increase salinity.


Freezing decreases salinity, while melting increases salinity.


Freezing increases salinity, while melting decreases salinity.


How does salinity vary with evaporation?









Question 4 options:

When water evaporates, it takes salt with it, increasing its salinity.


When water evaporates, it leaves salt behind, increasing its salinity.


When water evaporates, it leaves salt behind, decreasing its salinity.


When water evaporates, it takes salt with it, decreasing its salinity.

Answers

Answer:

that guys answers are all wrong except for #3

Explanation:

i took the quiz and got 1/4

22. Jose plays the piano extremely well, but his parents do not play at all. What types of trait is playing the piano? A. Inherited B. Dominant C. Acquired D. Recessive​

Answers

Answer:

I´m pretty sure its C

Explanation:

sorry if im wrong tho

Answer:

The Answer would be C

Explanation:

You cant inherit a skill you have to learn/acquire it.

Make a concept map with the following terms:
Stimulus, function of relation, response senses or receptors, touch, smell, environment, individual, stimulus, taste, hearing, sight, processing center, nervous system, somatic, central nervous system, peripheral nervous system, neurons, synapses, sensory, brain, motor, interneurons, electrical, chemical, spinal cord, autonomic, voluntary and involuntary actions

Please is for today :(

Answers

Answer: igu bro, ok first u add my bbrother to class and then u subrtarct the ugly kids and you omneof them so dieeeee

Explanation:

Due to the size of the Universe and the number of galaxies and stars in it, scientists must devise indirect ways to study it. Which of these represents the best way for scientists to study the Universe?

Answers

Answer:

A.  Scientists should create a graph showing a comparison of the relative sizes of all the galaxies and stars.

Explanation:

Due to the size of the universe and the number of galaxies and stars in it, scientists must use different methods for the purpose of the study, such as the analysis of cosmic microwave background radiation, gravitational lensing, etc.

What is the significance of the cosmology studies?

Scientists can conduct cosmology research in a variety of ways, including using computer simulations to model and predict the evolution of the universe and all of its materials, using gravitational lensing to measure the distribution of dark matter, and so on. Apart from that, the universe can be studied by using telescopes at various wavelengths,

Hence, due to the size of the universe and the number of galaxies and stars in it, scientists must use different methods for the purpose of the study, such as the analysis of cosmic microwave background radiation, gravitational lensing, etc.

Learn more about the cosmology studies here.

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True or False
Prokaryotic cells generally have a higher surface area to volume ratio than eukaryotic cells.

Answers

Answer:

true I think I just guessed

TRUE : Prokaryotic cells  generally have a higher surface area to volume ratio than eukaryotic cells

Eukaryotic cells are larger and complex when compared to prokaryotic cells which makes its surface area to volume ratio to be smaller than that of prokaryotic cells. cells are classified based on the arrangement  of their cell structures.

Prokaryotic cells are found in smaller organisms like Bacteria while Eukaryotic cells are found in larger organisms like Humans and Plants.

Hence we can conclude that based on the complexity and size of the Eukaryotic cell, the prokaryotic cells generally have a higher surface area to volume ratio.

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HELP ME FAST SMART PEOPLE PLEASE HEHE LOL:)

Answers

Answer:B

Explanation:

Asorbs the heat

Arrange the following concepts from simplest to most complex: Chromosomes, DNA, Genome, Gene

Answers

Answer:

DNA -> Gene -> Chromosome -> Genome

Explanation:

A genome is an organism's complete set of DNA including all of its genes. Each genome contains all of the information needed to build and maintain that organism. Chromosomes are the threadlike structures located inside the nucleus of animal and plant cells. A gene is the basic physical and functional unit of heredity.

The material and components that are vital for the growth and functioning of an organism that gets inherited from parent to offspring are the components of genetic information.

From simplest to complex they are arranged as:

DNA ⇒ Gene ⇒ Chromosome ⇒ Genome

DNA is the deoxyribose nucleic acid and is the genetic material that transports the instruction for development and function for growth.

Gene is a unit of hereditary that codes for gene products.

DNA molecules packed as a thread-like structure is called chromosomes.

The entire set of genes that pass from parent to offspring is called the genome.

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