Question

Coloration in mockingjays is determined by a single gene. The G allele leads to grey colored feathers and the g allele leads to all white feathers. If two heterozygotes are crossed, what would be the phenotypic ratio in the F1 progeny? What would be the genotypic ratio in the F1 progeny

Answer 1

F1 genotype = 1: 2: 1

F1 phenotype = 3:1

Step-by-step explanation:

given data

G = allete for grey colour feather

and

g = allele for white colour fether

and

Gg = genotype of heterozygotes

we do here cross of two heterozygotes that is

parantal generation Gg × Gg

⊥ ⊥

G g G g

gametes ⇒ F1 generation

F1 genotype = 1: 2: 1

F1 phenotype = 3:1