Which of the following would result in evolutionary adaptation of a mouse popula

Question

Which of the following would result in evolutionary adaptation of a mouse population to its environment?

Question 1 options:

half the mice are killed by an avalanche

mice are most likely to mate with close neighbors

several mice leave the area and mate with individuals from other populations

mice with thicker fur best survive a cold winter

a mutation for spotted fur occurs

Question 2

A zoologist found that in the population of frogs in Skywalker’s pond, half the genes for skin color in the gene pool were alleles for green spots, and half were alleles for brown spots. Which of the following could cause these proportions to change?

Question 2 options:

any of the above could cause the proportions to change

brown-spotted females prefer to mate with brown-spotted males

green-spotted frogs can hide more easily among the pond weeds

a drought shrinks the pond so that only five frogs remain

filling in a nearby pond causes those frogs to move to Skywalker’s pond

Question 3

In a population of bears, which would be considered the fittest?

Question 3 options:

the bear that leaves the most descendants

the strongest, fiercest bear

the biggest bear

the bear that blends in with its environment the best

the bear having the largest number of mutations

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Question 4

Humans share several features with salamanders. Certain genes and proteins are nearly identical between the two species; both species have four limbs with a similar skeletal structure; the species' early embryos are very similar; and where the salamander has a functional tail, humans have a vestigial tailbone. In evolutionary terms, these are examples of

Question 4 options:

geographic similarity.

coincidental similarity.

adaptation by natural selection.

homology.

half the mice are killed by an avalanche

mice are most likely to mate with close neighbors

several mice leave the area and mate with individuals from other populations

mice with thicker fur best survive a cold winter

a mutation for spotted fur occurs

Explanation / Answer

Question-1

The mice with thicker fur best survive a cold winter; it is an evolutionary adaptation of a mouse population to its environment. Thus, the correct is (D).

Question-2

Brown-spotted females prefer to mate with brown-spotted males. Green-spotted frogs can hide more easily among the pond weeds. A drought shrinks the pond so that only five frogs remain. Filling in a nearby pond causes those frogs to move to Skywalker’s pond. So, any of the above could cause the proportions to change.

Thus, the correct is (A).

Question-3

In a population of black bears, the bear that leaves the most descendants

would be considered the fittest. Thus, the correct is (A).

Question-4 (homology) Thus, the correct is (D).

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