Eye color in most mammals is dependent on the number of inherited pigment genes (melanin) that are additive in their effects. If an uppercase letter contributes pigment but a lowercase does not, what would be expected in the progeny when a person with with genotype AaBB plans to procreate with genotype Aabb, The five possible colors are: Brown (4 pigment genes) > Hazel (3 pigment genes) > Green (2 pigment genes)> blue (1 pigment gene) > no pigment (absence of melanin is often seen as red).

Hazel - 1/4 or 25%

Green - 1/2 or 50%

Blue - 1/4 or 25%

Explanation:

First, let us carry out the cross between AaBB and Aabb using a Punnet's square. The result is as below:

AABb - 4/16

AaBb - 8/16

aaBb - 4/16

(See the Punnet's square analysis in the attached image).

AABb genotype has 3 pigments, hence, would be hazel.

AaBb genotype has 2 pigments, hence, would be green.

aaBb has one pigment, hence, would be blue.

Expected progeny:

Hazel - 1/4 or 25%

Green - 1/2 or 50%

Blue - 1/4 or 25%

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