A Population of Drosophila Simulans Carries Three Alleles at the White

question 6

Multiple Choice

A population of Drosophila simulans carries three alleles at the white locus: the wild-type allele at 86 percent, w₁ at 9 percent, and w₂ at 5 percent.What can we say about this population?

• A) There must be other alleles that have not been sampled.
• B) The population is polymorphic.
• C) w₁ must be dominant to w₂.
• D) w₂ must be dominant to w₁.
• E) The white locus has pleiotropic effects.

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Definitions:

Blushing

A physiological response characterized by the reddening of the face due to emotional states such as embarrassment, shame, or modesty.

Positive Reinforcer

An incentive that, when applied following an action, heightens the probability of the action being repeated.

Negative Reinforcer

An unpleasant stimulus whose removal leads to an increase in the probability that a preceding response will be repeated in the future.

Immediate Reinforcer

refers to a reward that occurs directly after a behavior, enhancing the likelihood of that behavior occurring again in the future.