Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. an incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result. then, two of the purple offspring are crossed. according to the punnett square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete dominance?

The correct answer would be 50 percent.

Explanation:

Let us consider that R and r are the alleles of the gene, which is accountable for the color of the feather in a bird.  

R is the incompletely dominant allele that codes for red feather when finding in homozygous condition, while r is the recessive allele that codes for the blue color when found in homozygous condition. The individual obtains a purple color when it is heterozygous for the gene. Therefore, the genotype of the bird with purple feathers would be Rr.  

This will give rise to two kinds of gametes, that is, R and r. The cross is given in the attachment below. Therefore, the genotype ratio would be 1 (RR): 2 (Rr): 1 (rr). Hence, two out of the four or the 50 percent offspring would demonstrate incomplete dominance.  

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