Question

1. assume that one of squidward’s sons, who is heterozygous for the light blue body color, married a girl that was also heterozygous. create a punnett square to show the possibilities that would result if they had children.

a. list the genotypes with the phenotypes of the possible offspring.
b. what are the chances of a child with light blue skin?
c. what are the chances of a child with light green skin?

Explanation:

Step1: Define alleles and parents

Let light blue = dominant allele $B$, light green = recessive allele $b$. Both parents are heterozygous: $Bb \times Bb$.

Step2: Build Punnett Square

$$\begin{array}{c|cc} & B & b \\ \hline B & BB & Bb \\ b & Bb & bb \\ \end{array}$$

Step3: List genotypes/phenotypes

Match each genotype to its phenotype.

Step4: Calculate trait probabilities

Count genotype ratios for each phenotype.

Answer:

a. Genotypes and Phenotypes:

• $BB$: Light blue skin
• $Bb$: Light blue skin
• $bb$: Light green skin

b. 75%

c. 25%