Look at these data. Beak depth, the distance from the top to the bottom of the beak, is controlled by the bird's
genes. The bar chart shows the variation in beak size before a drought. The survival of birds after the drought
with a particular bill depth is shown by the yellow line. Explain how these data support the idea of natural
selection among the finches.
Answers
Directional selection increased the frequency of individuals carrying the larger bill depths and decreased the frequency of individuals carring small and medium bill depths.
What is directional selection?Natural selection is an evolutive force that favors beneficial alleles and increase their frequency in the population.
Directional selection is the way in which natural selection acts on a population by increasing the proportion of individuals with an extreme phenotypic trait.
This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.
Data on the chart Before the drought ⇒ Bar chart.The chart indicates that before the drought, the average size of the bill depth was 9.5 mm. This is an intermediate phenotype between the shortest (7.5 mm) and the largest (11 mm).
So, most individuals in the population expressed the intermediate phenotype of the bill depth.
After the drought ⇒ Line chart
The line chart indicates that, after the drought,
→ only individuals with the largest bill depth (one of the extreme phenotypes) expressed the highest survival rates.
→ Individuals with the shortest bill depth (the other extreme phenotype) expressed the lowest survival rates.
→ Individuals with the intermediate phenotype expressed an intermediate survival rate.
Directional selection favored one of the extreme phenotype -largest bill depths- over the other extreme phenotype and over the intermediate phenotype.
The frequency of individuals carrying the largest bill depths increased.
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Related Questions
Extra neurotransmitters are absorbed into the presynaptic neuron through __________.
A.
pumps
B.
osmosis
C.
terminals
D.
reuptake
Answers
Answer:
Reuptake!
Explanation:
100% Sure
Answer:
D) reuptake
Explanation:
edge 2023
Does anyone have answers to this work sheet
Answers
Answer:
1) 2,1,2
2) 2,1,2
3) 2,1,2
4) 4,1,2
5) 2,2,1
6) 2,3,2
7) 2,4,1
8) 3,1,2
9) 1,2,1,1
10) 1,1,1,3
11) 1,2,1,2 (not sure about this one)
Which level of organization is characterized by a group of cells that work together to perform a common function?
organ
tissue
organ system
organism
A lion eating a zebra is an example of which characteristic of life?
having cells
responding to the environment
using energy
growing and developing
Answers
Explanation: The level of organization that is charactrized
by a group of cells that work together to perform a common function is a tissue.
A lion eating a zebra is an example of using energy. Because the lion is using it energy to get the zebra this will later lead to development
Prokaryotic and eukaryotic cells are both very different but share a similarities in the structures they have. Which of the following structures is NOT found in a prokaryotic cell but found in a eukaryotic cell?
Answers
Answer:
Golgi body.
Why because Golgi Body?
Only eukaryotic cells have membrane bound cells.
Victoria is baking a pan of
brownies for her class. To make the brownie
the following ingredients were needed:
1 stick of butter - $1.29
• 3 eggs - $0.50
1 cup of sugar - $0.25
• 1 cup of flour $0.20
What was Victoria's total cost?
Answers
Answer:
$2.24
Explanation:
add cost of ingredients;
1.29+0.50+0.25+0.20=2.24
Select all that apply.
Which of the following statements are not true of carbohydrates?
Answers
Answer:
Triglycerides are the most common type
Explanation:
What are the most harmful plants found in earth
Answers
Deadly Nightshade (Atropa belladonna) ...
White Snakeroot (Ageratina altissima) ...
Castor Bean (Ricinus communis) ...
Rosary Pea (Abrus precatorius) ...
Oleander (Nerium oleander) ...
Tobacco (Nicotiana tabacum)
Explanation:
...... Water Hemlock .......
Which device controls the emission of harmful gases from a car?
A.
wet scrubber
B. catalytic converter
C. cyclone device
D
baghouse filter
Answers
A catalytic converter is a device which controls the emission of harmful gases from a car.
What is a catalytic converter?
A catalytic converter is a device present in cars which helps to control the emission of harmful gase from cars.
A catalytic converter works by converting toxic gases and pollutants in exhaust gas produced in internal combustion engine into less-toxic pollutants by catalyzing a redox reaction.
For example, toxic carbon monoxide is oxidized to less harmful carbon dioxide.
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Answer: The answer is catalytic converter
Explanation: I got it correct on Edmentum
Which statement accurately describes tectonic plate movement?.
Answers
Answer:
Tectonic plate movement is a long-term environmental change
Explanation:
a type of movement in which plates of the earth moves on another. Due to this movement, earthquakes occurs which adversely effected the environment of the earth surface. Due to these tectonic plate movement, eruption of volcano occurs which helps in the formation of new mountains and we know that mountains change the climate. These movements causes long-term environmental change because it changes the environment slowly and takes more time to change it
Arteries are most accurately defined as blood vessels that carry __________. highly oxygenated blood blood toward the heart blood away from the heart deoxygenated blood
Answers
Answer: Blood away from the heart
Explanation:
Why is a hydrogen molecule, H2. more stable than a Hydrogen atom?
Answers
Answer:
in the hydrogen molecule. the electron from each atom are able to be near two protons instead of only one proton it started with.
Which statement is true of RNA?
has the sugar deoxyribose
double-stranded
has the base thymine
has the base uracil
Answers
Answer:
Has the base uracil
Explanation:
Uracil is one of four nitrogenous bases found in the RNA molecule
Which statement most accurately describes the differences between respiration and fermentation? Fermentation uses a single substrate as an electron donor and acceptor while respiration uses different substrates. There is no difference between fermentation and respiration. Fermentation uses oxidative phosphorylation for ATP synthesis, respiration uses substrate-level phosphorylation. Respiration uses NADH as an electron carrier, fermentation does not. Respiration uses a single substrate as an electron donor and acceptor while fermentation uses different substrates.
Answers
Answer:
Respiration uses NADH as an electron carrier, fermentation does not
Explanation:
Respiration is the process of chemical reactions, in oxidising food to generate energy.
Fermentation is chemical breakdown of organic substrate, like glucose, by microrganisms like bacteria & yeast.
Difference between them is that : Respiration process uses NADH in oxidative phosphoralytion for ATPs . However, fermentation doesn't include use of NADH in oxidative phosphoralytion for ATPs.
Which condition occurs when antibodies bind to and stimulate receptors that elicit production of thyroid hormone and growth of the thyroid gland
Answers
Answer:
Graves disease is the condition which occurs when antibodies bind to and stimulate receptors that elicit production of thyroid hormone and growth of the thyroid gland.
Among protostomes, which morphological trait has shown the most variation?.
Answers
Answer:
type of body cavity (coelom vs. pseudocoelom vs. acoelom).
Explanation:
Body segmentation among protostomes, body segmentation has shown the most variation. The correct option is A.
The division of an organism's body into distinctive repeating units is referred to as body segmentation.
Body segmentation has demonstrated extraordinary diversity among protostomes, which encompass a wide range of invertebrate species including arthropods, mollusks, and annelids.
The number and placement of segments, as well as their specialisation for certain functions, all exhibit this variety.
Arthropods, for instance, have a very broad range of body segments that are specialised for a variety of functions, including movement, eating, and sensory perception.
The amazing adaptability and evolutionary success of protostomes, which allow them to occupy a variety of ecological niches and exhibit a wide range of body forms and functions, is highlighted by the significant variation in body segmentation among species.
Thus, the correct option is A.
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Your question seems incomplete, the probable complete question is:
Among protostomes, which morphological trait has shown the most variation?.
A: Body segmentation
B: Appendage structure
C: Body symmetry
D: Digestive system complexity
To keep from being hurt by lifting too much weight, there are a number of feedback systems in place. ___ respond to the degree of muscle contraction, or force, and act as a brake against excessively vigorous contraction.
Answers
Golgi tendon organs act as a brake against excessively vigorous contraction.
What are Golgi tendon organs?These are stretch receptors which are found within the collagen fibers of tendons and within joint capsules.
They help in acting as a brake against excessively vigorous contraction through responses to muscle contraction or force.
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why is photosynthisis important
Answers
Answer:
It gives us oxygen to breath.
Explanation:
If we had no oxygen we'd be lookin like sum raisins right bout now. ROFL
This is important because this process uses sunlight to synthesize food obtained from carbon dioxide, and water. Photosynthesis generally involves the green pigment chlorophyll and makes oxygen as a byproduct for us to breathe. We depend on this plant process for our oxygen needs. This process also helps the plant live.
Where do erosion and deposition occur in a river?
Answers
Answer:
Soil erosion occurs on River at the force of water flows the useful soil .
Deposition is occured when the useful soil is deposited.
Why as viruses described as particles rather than cells?
Answers
Answer: A single virus particle is known as a virion, and is made up of a set of genes bundled within a protective protein shell called a capsid.
Viruses do not have nuclei, organelles, or cytoplasm like cells do, and so they have no way to monitor or create change in their internal environment. A virus is not a living thing. And they cannot do anything on their own until they enter a living cell. Without cells, viruses wouldn't be able to multiply.
What are the products of aerobic cellular respiration?.
Answers
Answer:
Water (H2O), Carbon Dioxide (CO2) and ATP
Explanation:
I just got it right in the quiz
5. Why did the students use such a large number of tadpoles (100 in each tank) in The class experiment?
Answers
They put 100 tadpoles in each tank to see which tank of tadpoles would thrive the best with different amounts of fertilizer
how does the abiotic factors affect the activities of the limpet
Answers
Answer: I don't know if this is much help but here. In both the terrestrial and marine realms, species distributions can be influenced by abiotic factors, including extremes in environmental conditions such as temperature, precipitation, desiccation, wind and wave forces.
In order for yeast to undergo alcoholic fermentation, what energy
molecule do they need to produce ethanol and CO2?
Answers
Answer:
Alcoholic fermentation begins with the breakdown of sugars by yeasts to form pyruvate molecules, which is also known as glycolysis. Glycolysis of a glucose molecule produces two molecules of pyruvic acid. The two molecules of pyruvic acid are then reduced to two molecules of ethanol and 2CO2.
11. This year in the US, how many new cases of cancer are estimated to come up every
minute? How many deaths due to cancer every minute?
Your answer
Please help ASAP!
Answers
Answer:
Explanation:
This year in the US, how many new cases of cancer are estimated to come up every? answer: Between 2010 and 2020, we expect the number of new cancer cases in the United States to go up about 24% in men to more than 1 million cases per year, and by about 21% in women to more than 900,000 cases per year. how many deaths due to cancer every minute? answer: f current trends continue, cancer is expected to be the leading cause of death in the United States by the year 2010. One in five persons in the US will die from cancer. Every three minutes, two people in the US die from cancer. so about 1/2 in fraction point. hope this helped :)
below you will sketch the difference between cells that go through mitosis versus meiosis. the focus is on the number of chromosomes, not the specific steps, so you only need to draw the chromosomes in each circle. do this drawing for a fruit cell, whose body cells have 8 chromosomes or 4 homologous pairs.
Answers
Mitosis produces two diploid cells (2n). Meiosis produces four haploid cells (n). Mitosis: 2 cells-8 chromosomes. Meiosis: 4 cells-4chromosomes.
What is mitosis?
Mitosis is a cell division process through which a diploid somatic cell (2n), produces two daughter diploid cells (2n). During mitosis, the whole-cell first suffers duplication of its content and then it separates. Mitosis occurs in somatic cells and in germ cells.
What is meiosis?
Meiosis is a cell division process that produces gametes from germ cells. Through Meiosis, a diploid cell (2n) produces four haploid daughter cells (n). After DNA replication there are two meiotic phases.
The first one is a reductive phase, in which homologous chromosomes separate. In the second phase, the cell suffers a new, not reductive division.Fruit cells ⇒ 8 chromosomes
After mitosis ⇒ 2 new daughter cells with 8 chromosomes (2n)After meiosis ⇒ 4 new cells with 4 chromosomes (n)You will learn more about mitosis and meiosis at
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29. The blank is analogous to the life cycle of a Frog or butterfly.
Answers
Answer:
life begins as an egg and progresses through metamorphosis until the frog and the butterfly are both fully grown.
Explanation:
....
The blank refers to the metamorphosis process, which is analogous to the life cycle of a frog or butterfly. Metamorphosis is a profound transformation, often seen in insects like butterflies and amphibians like frogs.
In both cases, the transformation from one life stage to another is dramatic and involves distinct phases. For butterflies, it starts as an egg, hatches into a larva (caterpillar), undergoes pupation, and emerges as an adult butterfly. Similarly, frogs begin as eggs, hatch into tadpoles, undergo metamorphosis as they develop limbs and lungs, and finally become adult frogs.
This process highlights nature's ability to renew and adapt. Metamorphosis allows organisms to exploit different ecological niches throughout their life, maximizing survival chances. This biological phenomenon showcases the wonders of evolution, where creatures undergo striking changes, symbolizing growth, renewal, and resilience.
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Suppose you have a tea kettle boiling on a hot plate next to a window it is a cold morning and as seen from the kettle hits the window it forms ice what parts of the water cycle are you modeling?
Please help quick!! I appreciate an answer!!
Answers
By looking at the conditions, the part of the water cycle that we model here is Condensation.
What is the Water cycle?It is a type of biogeochemical cycle that shows the continuous movement of water within the earth in different states.
The activity that is shown above reveals the process of condensation, i.e. the process by which water vapor in the air is changed into liquid water. Condensation is crucial to the water cycle because it is responsible for the formation of clouds. Tea kettle boiling forms the water vapor and its vapor is changed its state in the window to a liquid.
Therefore, the part of the water cycle that we model here is Condensation.
To learn more about the Water cycle, refer to the link:
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NEED HELP ASAP WILL GIVE BRAINLIEST IF RIGHT!!!
Fog catchers ___________ water drops from fog, making them large enough for gravity to pull them down the nets and into storage tanks.
A. Move
B. Separate
C. Accumulate
D. Acculturate
Answers
Answer:
c
Explanation:
It's sunny in New York, but it is cool. Where would you expect to find this lizard during the day?
A) under a rock
B) in a damp stream bed
C) basking in a sunny spot
D) in a hole in the ground
Answers
It's sunny in New York, but it is cool. Where would you expect to find this lizard during the day?
C) Basking in a sunny spotSince, The climate is cold and the weather is hot the lizard would be basking in the sun to absorb the heat in order to prepare for the cold climatic conditions at night...~
Answer:
Two options are suitable
Basking in a sunny spot Under a rockExplanation:
Lizard is a reptile so cold blooded.
It will take bath in sun for a while to get vitamin D for its growth ..The rest of time (most of time) will lie under a rock to keep body warm .Which of the following describes the difference between biotic and abiotic factors?(1 point)
biotic is non-living and abiotic is living
biotic is non-living and abiotic is living
abiotic is non-living and biotic is living
abiotic is non-living and biotic is living
biotic provide minerals and abiotic does not
biotic provide minerals and abiotic does not
abiotic provide minerals and biotic does not
abiotic provide minerals and biotic does not
Answers
Answer:
abiotic is non-living and biotic is living
Explanation:
In an ecosystem, abiotic factors consists of non-living things while bioitic factors consists of living things.
Hope this helps
Answer:
- abiotic is non-living and biotic is living
Explanation:
Abiotic is a word used to describe nonorganic things that aren't derived from living organisms. Some examples are stars, air, snow, and soil. Since abiotic items are not from living entities, they themselves are not alive. Therefore, abiotic is, in simple terms, defined as non-living. The word abiotic is a combination of the prefix "a-," the root word "bio," and the suffix "-ic." The "a-" is equivalent to "without." The root word "bio" translates to "life," while "-ic" stands for "pertaining to."Overall, these affixes and words combine their definitions to mean 'without pertaining to life' - an interpretation that makes definite sense given the elaboration above.
Biotic is a word used to describe organic things that are derived from living organisms. Some examples are fish, whales, chrysanthemums (type of flower), and lizards. Since biotic beings are from living entities, they themselves are alive as well. Therefore, biotic is, in simple terms, defined as living.The word biotic is a combination of the root word "bio" and the suffix "-ic." The root word, "bio," means "life." The suffix "-ic" is correspondent with the words "pertaining to." These parts combine to create the phrase 'pertaining to life,' which is significantly accurate given the foregoing definition.
Basically, things living things are biotic and nonliving things are abiotic. Just remember "bio" is all about life, and the prefix "a" is defined as "without."
( You can also do an online search of this topic. If so you wish to, try looking up "biotic vs abiotic" in your search engine. )