The Figure Shows Three Mouse Populations and Their Associated Changes

question 15

Multiple Choice

The figure shows three mouse populations and their associated changes in the frequency of B,the allele for dark fur.The recessive b allele codes for white fur.After 20 generations,in which population would you be most likely to encounter a white mouse?

• A)N₁
• B)N₂
• C)N₃
• D)There is an equal probability of encountering a white mouse in all three populations.
• E)There is an equal probability of encountering a white mouse in populations N₁ and N₃ and this is higher than in N₂.

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Definitions:

Reinforcement

The process of encouraging or establishing a pattern of behavior by offering rewards or consequences.

Environmental Events

Occurrences or changes in the physical world surrounding an organism that can influence its behavior and survival.

Secondary Reinforcement

A type of reinforcement that has acquired value through being paired with primary reinforcers or through association with other reinforcing stimuli.

Primary Reinforcement

A reinforcing stimulus that satisfies a basic biological need or drive, such as food, water, or warmth.