Question

1. everyone in squidward’s family has light blue skin, which is the dominant trait for body color in his hometown of squid valley. his family brags that they are a “purebred” line. he recently married a nice girl who has light green skin, which is a recessive trait. create a punnett square to show the possibilities that would result if squidward and his new bride had children. use b to represent the dominant gene and b to represent the recessive gene. a. list the possible genotypes and phenotypes for their children. b. what are the chances of a child with light blue skin? % c. what are the chances of a child with light green skin? % d. would squidward’s children still be considered purebreds? explain! 7. 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.

Explanation:

Question 6 (A - D) and Question 7 Solutions

Question 6:

Step 1: Determine Genotypes
Squidward’s family is purebred (homozygous dominant) for light blue skin: genotype \( BB \).
His bride has light green skin (recessive trait), so her genotype is \( bb \).

Step 2: Create Punnett Square

	\( B \)	\( B \)
\( b \)	\( Bb \)	\( Bb \)

Part A: Possible Genotypes and Phenotypes

• Genotype: All offspring will have \( Bb \) (heterozygous).
• Phenotype: All offspring will have light blue skin (since \( B \) is dominant).

Part B: Chances of Light Blue Skin

From the Punnett square, all 4/4 (100%) of the offspring have the dominant trait (light blue skin).

Answer:

\( 100\% \)

Part C: Chances of Light Green Skin

Light green skin is recessive (\( bb \)). No offspring have \( bb \), so the chance is \( 0\% \).