Question

Let's do one more monohybrid cross. Suppose there is a gene in chickens that controls whether their eggs will be brown or white. Assuming that brown eggs (B) are dominant to white eggs (b), what are all of the phenotypes that would result from a cross between two chickens that are heterozygous for laying brown eggs? To get full credit for this question you will need to:

a) List the parental genotypes and phenotypes.
b) List the gametes produced by each parent.
c) Do a punnet square. You can do this by inserting a 3x3 table.
d) List all of the possible genotype and phenotypes from the cross with numbers.

Answer 1

The phenotypes resulting from a cross between two chickens heterozygous for laying brown eggs can be determined using a Punnett square. The genotypes are BB, Bb, and bb, while the phenotypes are brown and white.

Step-by-step explanation:

To determine the phenotypes resulting from a cross between two chickens heterozygous for laying brown eggs, we need to perform a monohybrid cross. The parental genotypes are Bb, where B represents the dominant brown allele and b represents the recessive white allele. The parental phenotypes are both brown egg layers. The gametes produced by each parent are B and b. Using a Punnett square, we can determine the possible genotypes and phenotypes. The genotypes are BB, Bb, and bb, while the phenotypes are brown and white.