Reference no: EM132511132

Two genes on the same chromosome contribute to red head feathers.

Gene 1 is a presence/absence gene with two alleles (R and N) that exhibit complete dominance. Males with a dominant R allele will grow red spring feathers, while males with only recessive N alleles will never grow red feathers. o

Gene 2 is related to dosage and contributes to the brightness of the red feathers; it has two alleles that exhibit incomplete dominance (B and b). Males with the B allele have brighter red feathers than males with the b allele. Variation at this gene only affects brightness for males that can grow red feathers.

1) Which of the following are TRUE with respect to the feather coloration trait in this species? (select all that apply)

a. The trait displays epistasis.

b. The trait is continuous.

c. The trait is categorial.

d. The trait is polygenic.

e. Red coloration arose via mutation because females preferred them.

f. Recombination could shuffle the allele combos for Genes 1 and 2 in the gametes produced by this species.