Question

for each offspring genotype in the punnett square you just completed, determine the phenotype. in other words, what is the predicted fur color and eye color of the offspring? using your punnett square from the last step, fill in the predicted fraction for each phenotype in the data table below.

	black fur and black eyes	black fur and red eyes	white fur and black eyes	white fur and red eyes

Explanation:

To solve this, we assume a typical dihybrid cross (e.g., for two traits: fur color and eye color, each with two alleles, say black fur (B) dominant over white (b), black eyes (E) dominant over red (e)). A dihybrid cross of heterozygotes (BbEe x BbEe) produces a Punnett square with 16 outcomes. The phenotypic ratios for a dihybrid cross (9:3:3:1) apply here:

Step1: Identify Phenotypic Ratios

For a dihybrid cross (two traits, each with dominant/recessive alleles), the phenotypic ratio is 9 (dominant - dominant) : 3 (dominant - recessive) : 3 (recessive - dominant) : 1 (recessive - recessive).

Step2: Assign to Each Phenotype

• Black Fur and Black Eyes (dominant - dominant): 9 out of 16.
• Black Fur and Red Eyes (dominant - recessive): 3 out of 16.
• White Fur and Black Eyes (recessive - dominant): 3 out of 16.
• White Fur and Red Eyes (recessive - recessive): 1 out of 16.

Answer:

Black Fur and Black Eyes: $\boldsymbol{9}$/16
Black Fur and Red Eyes: $\boldsymbol{3}$/16
White Fur and Black Eyes: $\boldsymbol{3}$/16
White Fur and Red Eyes: $\boldsymbol{1}$/16