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In Biology / Senior High School | 2025-04-05

In a population of chickens, feather color is determined by a single gene with three alleles: B for black, W for white, and S for speckled. The B and W alleles exhibit codominance, where both alleles are expressed equally in heterozygous individuals. S allele is recessive. If a black feathered chicken is crossed with a speckled feathered chicken, what are the possible genotypes and phenotypes of the offspring?

Asked by Rosehchenen

Answer (1)

Parental Genotypes:Black-feathered chicken: Can be either BB (homozygous black) or BW (heterozygous black, showing codominance with white).Speckled-feathered chicken:Must be SS (homozygous speckled, as S is recessive).Possible Offspring Genotypes:If the black chicken is BB: The offspring would be BS, resulting in a black phenotype.If the black chicken is BW: The offspring would be BS or WS, resulting in black or white checkered phenotypes.Since the speckled chicken is SS, it can only contribute the S allele, and the black chicken can contribute either B or W.Possible Offspring Phenotypes:BS: Black feathers.WS: White checkered feathers.

Answered by ytkaisen3 | 2025-04-05

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