In Sheep, Coat Color Is Influenced by Two Genes

question 51

Multiple Choice

In sheep, coat color is influenced by two genes. Gene A influences pigment production, while gene B produces black or brown pigment. If two heterozygous white sheep resulted in 12 white sheep, 3 black sheep, and 1 brown sheep, which genotype(s) of the white sheep explain this data?

• A) The white sheep could be A_B_ or aabb.
• B) The white sheep must all be A_B_.
• C) The white sheep could be A_B_ or A_bb.
• D) The white sheep must all be aabb.
• E) The white sheep could be A_B_ or aaB_.

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Definitions:

Content

The information, subjects, or thematic elements contained within a work or conveyed by a message.

Standard Form I

Generally refers to a universally accepted or conventional format or structure for a particular type of document or argument, though without more context, its specific application in this case is unclear.

Quantity

A property that can exist as a multitude or magnitude, often measurable, that describes the amount or number of something.

Quality

The degree of excellence or distinction of something, often judged according to its attributes or merits.