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

question 7

Multiple Choice

Long-term studies of Belding's ground squirrels show that immigrants move nearly 2 km from where they are born and make up 1 to 8% of the males and 0.7 to 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' size stable.
• 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 other populations.
• D)Those individuals that emigrate to these new populations are looking for less crowded conditions with more resources.
• E)Gradually, the populations of ground squirrels will move from a uniform to a clumped population pattern of dispersion.

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Definitions:

Passage Of Time

The process of time moving forward, marked by changes or events that occur.

Interference Theory

A theory that proposes the inability to remember information is due to other learning or information interfering with the retrieval process.

Retrieval Failure

The inability to recall information that is stored in memory, often due to interference or the passing of time.

Ineffective Encoding

A failure in the process of storing new information in a manner that makes it easy to retrieve later, often leading to forgetfulness.