In Horses, There Are Four Alleles at the a Locus

question 47

Short Answer

In horses, there are four alleles at the A locus. Arranged in dominance sequence they are:
A (wild), ab (bay), ac (brown), ad (black)
​.If you bred several bay mares whose sires were brown to a brown stallion whose sire was black, what are the genotypes of the parents; what type of offspring would be produced; and in what proportion?

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Definitions:

Primate

A member of the mammalian order Primates, which includes humans, apes, monkeys, and prosimians, characterized by large brains, forward-facing eyes, and opposable thumbs.

Impregnate

To fertilize an egg, causing it to develop into an embryo; in a broader sense, it can also mean to permeate or saturate something with a substance.

Gene-Environment Interaction

The complex interplay between genetic predispositions and environmental factors that influence the development and expression of traits and behaviors.

Biological Heritage

The genetic and physiological characteristics that individuals inherit from their ancestors.