In a species of birds, blue feathers (B) are incompletely dominant to the gene for white feathers (b). Individuals that are heterozygous (Bb) have blue-tipped feathers. A bird with blue-tipped feathers is crossed with a white bird. What is the chance that the offspring will have blue feathers

0

Explanation:

The chance that the offspring will have blue feather is 0.

From the illustration, blue feather with allele B exhibit incomplete dominance over white feather with allele b to give a blue-tipped feather phenotype.

Blue-tipped feathers bird will have the genotype Bb.

White feather bird will have the genotype bb.

Crossing both Bb and bb:

Bb   x   bb = Bb, Bb, bb, bb

Offspring

2 Bb - blue-tipped feather

2 bb - white feather

None of the offspring will have a blue feather. Hence the chance of the offspring having blue feathers is zero.

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.