If a rat population that lives in a cold northern tundra climate was moved to the desert, where temperatures are much warmer, and then allowed to evolve for many generations, which of the following hypothetical adaptations would be most likely to aid the rats with getting and staying cool?
a. A darker skin color that absorbs more sunlight
b. A reduction in the number of sweat glands
c. A larger body size
d. A smaller body size
Answers: 3
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Asmall number of finches are removed randomly from the wild and placed in a protected bird area. they are given as much food as they need and have plenty of space. why would natural selection not occur in this population? a. there is no reason for genetic mutation to occur. b. the birds compete for limited resources, c. the population has not reached carrying capacity. d. there is no genetic variation in the finches.
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Freckles are a dominant trait in humans. both of the girls have the genotype ff for freckles. if either one marries a man with no freckles, what are the chances that their children will have freckles?
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If a rat population that lives in a cold northern tundra climate was moved to the desert, where temp...
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