Question

punnett square practice
name:
directions: use the scenarios given below to complete the punnett squares and determine the
potential offspring for each set of parents. use the lines on the right hand side to list the genotype
and phenotype for each possible child.

1. a brown - eyed homozygous dominant female (bb) has a baby with a brown - eyed

heterozygous male (bb). b = brown, b = blue
genotype phenotype
possibility 1:
possibility 2:
possibility 3:
possibility 4:

Explanation:

Step1: Create Punnett Square

	B	B
b	Bb	Bb

Step2: Determine Genotypes

From the Punnett square, the genotypes are \(BB\), \(BB\), \(Bb\), \(Bb\).

Step3: Determine Phenotypes

Since \(B\) (brown) is dominant over \(b\) (blue), both \(BB\) and \(Bb\) result in brown - eyed phenotype.

Answer:

Possibility 1: Genotype - \(BB\), Phenotype - Brown - eyed
Possibility 2: Genotype - \(BB\), Phenotype - Brown - eyed
Possibility 3: Genotype - \(Bb\), Phenotype - Brown - eyed
Possibility 4: Genotype - \(Bb\), Phenotype - Brown - eyed