Question

complete the sentence correctly below. parents gg x gg would have a % chance to have a child that is grey.

Explanation:

Step1: Set up Punnett Square

Parent 1 (GG) contributes G, G; Parent 2 (Gg) contributes G, g.

$$\begin{array}{c|cc} & G & G \\ \hline G & GG & GG \\ g & Gg & Gg \\ \end{array}$$

Step2: Count dominant genotypes

All 4 offspring (GG, GG, Gg, Gg) have the dominant G allele, which expresses the grey phenotype.

Step3: Calculate percentage

$\frac{4}{4} \times 100\% = 100\%$

Answer:

100