The following image is a pedigree for a family with the genes for cystic fibrosis, which is an autosomal recessive trait. If the dominant allele is represented by A and the recessive allele is represented by a, what would be a possible genotype and phenotype of individual II.3?

A. Genotype: AA
Phenotype: unaffected

B. Genotype: aa
Phenotype: unaffected

C. Genotype: Aa
Phenotype: affected

D. Genotype: AA
Phenotype: carrier


A. Genotype: AA
Phenotype: unaffected

I hope this helps.

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? 1 in 4 2 in 4 3 in 4 4 in 4

Why has two different alleles for the same trait?

Which areas of earth receive the most precipitation on average? a. tropics b. temperate zones c. regions near 30? n and s latitudes d. polar zones 1