Question

a student studying feather color inheritance in a certain species of chickens observes that the chickens have black (homozygous), grey (heterozygous), or white (homozygous) feathers. the student hypothesizes that this feather color trait follows the incomplete dominance inheritance pattern. which data table would support the students hypothesis? parent 1 parent 2 offspring phenotype reasoning black feathers white feathers grey feathers the alleles for feather color, black and white, are partially expressed resulting in a grey phenotype. parent 1 parent 2 offspring phenotype reasoning black feathers white feathers black feathers the allele for feather color, black, is dominant and fully expressed in the offspring. parent 1 parent 2 offspring phenotype reasoning black feathers white feathers white feathers the allele for feather color, white, is dominant and fully expressed in the offspring. parent 1 parent 2 offspring phenotype reasoning black feathers white feathers black and white feathers the alleles for feather color, black and white, are equally expressed in the offsprings phenotype.

Explanation:

In incomplete - dominance, neither allele is completely dominant over the other, and the heterozygous offspring shows an intermediate phenotype. When a black (homozygous) and a white (homozygous) chicken are crossed, if it is incomplete - dominance, the offspring should have a phenotype that is a blend of the two parental phenotypes, which is grey in this case.

Answer:

The data table with Parent 1: Black Feathers, Parent 2: White Feathers, Offspring Phenotype: Grey Feathers, Reasoning: The alleles for feather color, black and white, are partially expressed resulting in a grey phenotype.