BIOLOGY HIGH SCHOOL

The understanding of evolutionary processes has helped scientists in the field of artificial selection. The best example of artificial selection is

Answers

Answer 1
Answer: The conservation of bald eagles is not a description of selective breeding, but it could be. For now we can cross that off.
Geographical distribution is a geographical factor of Natural selection, so it can't be B either.
Pesticide-resistant potatoes are altered to be resistant to pesticides (pesticides wouldn't affect plants anyway as they are meant to kill insects)
The answer is D. The collection and reseeding of the largest pumpkins is the best answer.
Answer 2
Answer:

Answer:

the answer is C: the production of pesticide-resistant potatoes.

Explanation:

just took the test

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According to evolutionary history and taxonomy, tigers resemble ____________ more closely than they resemble fish.

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Taxonomy is the classification of organisms into a system that indicates natural relationships (evolutionary relationships). This theory describes, names, and classifies organisms.

According to evolutionary history and taxonomy, tigers resemble gorillas more closely than they resemble fish.
The correct answer to the question above is gorillas. According to evolutionary history and taxonomy, tigers resemble gorillas more closely that they resemble fish. Mainly because of how they walk, how they prey and the ability to live on the land.

5 The diagram below represents two processes thatoccur in organisms. A characteristic representedby X is common to both of these processes.ActiveDiffusionXTransportA characteristic that the two processes have incommon is that each process(3) uses oxygen(1) uses ATP(2) requires enzymes(4) moves molecules

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Answer: Move substances

Explanation:

The process of diffusion and active transport are some of the process inside the body which helps in transportation of the materials from one place to another.

The substances move a region of higher concentration to lower concentration  in case of diffusion and with the help of energy the molecules moves from lower concentration to higher concentration.

The correct answer is option D.
diffusion doesnt required energy or atp enzyme, and oxygen. it just need different concentration between two substance and semipermeable membrane if it is diffusion in water that usually we call as a osmosis.

otherwise they both move molecules, certain molecules somtime in transport active

Which statement is true according to plate tectonics theory?a. The plates that make up the asthenosphere float on top of the denser lithosphere.
b. The plates that make up the mantle float on top of the denser crust.
c. The plates that make up the core float on top of the denser asthenosphere.
d. The plates that make up the lithosphere float on top of the denser asthenosphere.

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I think it would be D 

Answer:

D

Explanation:

A substance that releases hydrogen ions in water is a base. True or false?

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Answer: FALSE

Explanation:

An acid is a substance which donates H⁺ (hydrogen) ions when are added to water or any other solution. The amount of H⁺ions liberates per acid molecule defines the acidity of the acid like weak or strong. The base is a substance which donates OH⁻ ions (hydroxide ions ) in the solution or water.        

No it is false. Because any substance is base what include OH. If it releases H ion, it should be acid.

When are traits most likely to be passed on to the next generation

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Inheredit traits would most likely be passed.

8. Which situation could lead to the evolution of a population? (Points : 5)A large population of butterflies grows larger.
A single individual dies in a large population.
A green parrot has an allele for green feathers and an allele for blue feathers.
A butterfly population includes both green and yellow butterflies, and a predator sees yellow more easily than it does green.


Question 9.9. A population of snails is experiencing disruptive selection in terms of shell patterns. Which graph represents disruptive selection?

(Points : 5)
graph C
graph A
graph D
graph B


Question 10.10. A bat wing, an alligator leg, and a human arm are homologous structures. How does the presence of homologous structures support one aspect of the theory of evolution? (Points : 5)
The fact that the bone structures are similar supports the theory that all of the animals evolved from mammals.
The fact that the bone structures are completely different supports the theory that those organisms did not share a common ancestor.
The fact that the bone structures are similar supports the theory that the animals shared a common ancestor.

Answers

"A butterfly population includes both green and yellow butterflies, and a predator sees yellow more easily than it does green" would lead to evolution since the green ones would live on. 

Answer:

Question 8. The correct answer is D: "A butterfly population includes both green and yellow butterflies, and a predator sees yellow more easily than it does green".

Question 9. The correct answer is graph C.

Question 10. The correct answer is C: "The fact that the bone structures are similar supports the theory that the animals shared a common ancestor".

Explanation:    

  • Question 8:  

Natural selection is the result of the phenotype-environment interaction which determines gene destiny in space and time, selecting beneficial alleles and increasing their frequency in the population. Natural selection can lead to speciation, driving to evolution. There are different types of natural selection: sexual selection, stabilizing selection, directional selection, frequency-dependent selection, and disruptive selection.

The exposed example: "A butterfly population includes both green and yellow butterflies, and a predator sees yellow more easily than it does green", is an example of directional selection.

Directional selection increases the proportion of individuals with an extreme phenotypic trait. In the example, natural selection will favor the green trait in butterflies over yellow, because as predators see better the yellow ones, these butterflies have more chances to be eaten. So the population must evolve to green traits to avoid predation.

Disruptive selection occurs when selective pressure favor homozygous. In equilibrium, the two alleles might be present or one of them might be lost. If an environment has extremes, then in these environments, both alleles are presented in homozygous.  

The disruptive selection causes an increase in the two types of extreme phenotypes over the intermediate forms.Limits between one extreme and the other are frequently very sharped. Individuals belonging to one phenotype can not live in the same area as individuals belonging to the other phenotype, due to the traits differences between them, competition, predation, etcetera.

Both extreme phenotypes have been favored over intermediated forms. In this way, populations show two extreme phenotypes and a few individuals in the middle. Individuals who survive best are the ones who have traits on the extremes forms. Individuals in the middle are not successful at survival or reproduction.  

Disruptive selection can lead to speciation, driving to evolution. This is why it is also called "diversifying selection".  

The graph representing this selection must show two pics, spacially separated from each other, reflecting the two extreme phenotypes in the population.

  • Question 10:

Classification of the biologic diversity intends to reflect the evolutive process that made a place to different organisms. This is estimating phylogeny, and it refers to the reconstruction of the evolutive ways that resulted in different groups.  Estimating phylogeny can be based on characters, and these last ones might be morphological, physiological, cytological, among others.  

Apomorphies and plesiomorphies are homologous characters shared by an ancestor and its derivated groups.Two characters are homologous if they share the same fundamental structure, if they share the same embryologic development, or if they share relation with adjacent structures. This is the case of the bone structures.

A bat wing, an alligator leg, a horse leg, a dolphin flipper, and a human arm are homologous structures. This is an ancestral homology, a character inherited from a common ancestor.

A common ancestor that is exposed to different pressures in different environments suffers changes in time as a result adaptation to the new environmental conditions. These changes lead to diversification and speciation.

The fact that the bone structures are similar supports the theory that the animals shared a common ancestor.

 
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