Long-Term Studies of Belding's Ground Squirrels Show That Immigrants Move

question 37

Multiple Choice

Long-term studies of Belding's ground squirrels show that immigrants move nearly 2 km from where they are born and become 1-8% of the males and 0.7-6% of the females in other populations.On an evolutionary scale,why is this significant?

• A)These immigrants make up for the deaths of individuals,keeping the other populations' sizes stable over time.
• B)Young reproductive males tend to stay in their home population and are not driven out by other territorial males.
• C)These immigrants provide a source of genetic diversity for the newly formed squirrel populations.
• D)Those individuals that emigrate to these new populations are looking for less crowded conditions with more resources.
• E)The populations of ground squirrels will move from a clumped to a uniform population pattern of dispersion.

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