At the edge of the Arctic Circle, owls prey on field mice. Occasionally, in a litter of white field mice, a brown mouse appears. Because of greenhouse warming, the snow melts, changing the environment to shades of brown. What is most likely true regarding the brown mice before the greenhouse warming? The brown mice population was large in number. The brown mice population was small in number. The fur color of mice changed to white because they needed to survive. There were no brown mice born before greenhouse warming

At the edge of the Arctic Circle, owls prey on field mice. Occasionally, in a litter of white field mice, a brown mouse appears. Because of greenhouse warming, the snow melts, changing the environment to shades of brown. What is most likely true regarding the brown mice before the greenhouse warming? The brown mice population was large in number. The brown mice population was small in number. The fur color of mice changed to white because they needed to survive. There were no brown mice born before greenhouse warming

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter39: Animal Behavior

Section: Chapter Questions

Problem 1CT

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Natural selection favored dark-colored fur in the rock pocket mouse. The selective force on the mouse population was ________. 1 - Predators 2 - Genetic mutations 3 - Rock color 4 - Availability of food for the rock pocket mice a) 1 only b) 1 and 3 c) 2 and 3 d) 1, 3 and 4
Imagine a population of crabs living on a white sandy beach. The crabs ONLY occur in two color - red and blue, each controlled by color genes. Over time, will the crab population shift toward white? Why or why not?
A species of geese migrates to an area with several other geese population. What might occur as a result? Group of answer choices mutation genetic drift bottleneck effect founder effect
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At the edge of the Arctic Circle, owls prey on field mice. Occasionally, in a litter of white field mice, a brown mouse appears. Because of greenhouse warming, the snow melts, changing the environment to shades of brown. What process causes the population to change colors? artificial selection natural selection migration behavioral isolation
Which is an example of an evolutionary adaptation? Group of answer choices constancy in the rate of accumulation of genetic changes in a molecule over time the loss of an allele in a population due to a population bottleneck fixation in a population of a selectively advantageous allele a change in frequency of a neutral allele by genetic drift
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Populations evolve by means of natural selection Group of answer choices True False Population genetics is the study of the frequency of alleles in a population Group of answer choices True False
The data chart below shows the number of black and tan mice in a population in a field over five generations. Which of the following is the most likely explanation of the findings? Question options: A natural disaster occurred during the second generation causing a reduction in the number of black mice and a bottleneck population of tan mice was left to reproduce. A random genetic mutation occurred in a black mouse in generation three, leading to a decline in the population. The predator of the mice hunts during the day when the tan mice are better camouflaged in the environment so the black mice were eaten more frequently. The tan mice were able to acquire the ability to adapt to the environment quickly between the first and second generation.
Which of the following is an effect of gene flow? Population size is greatly reduced Individuals establish a new population Natural disasters Genetic differences between populations are reduced

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		The brown mice population was large in number.
		The brown mice population was small in number.
		The fur color of mice changed to white because they needed to survive.
		There were no brown mice born before greenhouse warming.