Biologists wish to mate pairs of fruit flies having genetic makeup RrCc, indicating that each has one dominant gene (R) and one recessive gene (r) for eye color, along with one dominant (C) and one recessive (c) gene for wing type. Each offspring will receive one gene for each of the two traits from each parent, so the biologists predict that the following phenotypes should occur in a ratio of 9:3:3:1:

Assume that the conditions for inference are met. Carry out a test at the α = 0.05 significance level of the proposed genetic model.

Transcribed Image Text:

Phenotype Red eyes and straight wings Red eyes and White eyes and White eyes and straight wings curly wings curly wings Frequency 99 42 49 10