An Incompletely Dominant Gene Controls the Color of Chickens So

question 46

Multiple Choice

An incompletely dominant gene controls the color of chickens so that BB produces black, Bb produces a slate-gray color called blue, and bb produces splashed white.A second gene controls comb shape, with the dominant gene R producing a rose comb and r producing a single comb.If a pure-breeding, black chicken with a rose comb is mated to a splashed-white chicken with a single comb in the F₂ generation, what fraction of the offspring will be blue with single comb?

• A)9/16
• B)3/8
• C)3/16
• D)1/8
• E)1/16

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Definitions:

Salience Effect

Refers to the tendency of individuals to focus on items or information that stand out more noticeably or are more significant to them.

Depth of Processing

A theory suggesting the depth (shallow to deep) of mental processing affects memory recall; deeper processing leads to better recall.

Retroactive Interference

The phenomenon where newly learned information interferes with the recall of information learned previously.

Proactive Interference

The phenomenon where old memories interfere with the recall of new memories.