Allele Dominant or recessive? Trait description G dominant gray g recessive black 1. Baby mice produced from the cross between male gg and female Gg parents will include Choose genotypes and Choose phenotypes

Allele will be both heterozygous dominant and homozygous recessive in the progeny in the ratio of 1:1 ie 50 per-cent chance of both the alleles be expressed.

Phenotype: 50 per-cent chance of both black and gray colour mice

Genotype: Gg, gg 1:1

Explanation:

Dominant G

Recessive g

Baby mice produced from the cross between:

gg X Gg

Gg gg Gg gg

Genotype would be Gg gg in the ratio of 1:1

Phenotype would be Gray if dominant heterozygous gene having a dominant allele appear or black if recessive homozygous appears in the progeny mice. It will be in the ratio of 2:2.