Question: Two genes (geneA and geneB) act redundantly to convert a colorless product into a red pigment in a particular species. If a pure-breeding red line, homozygous for the dominant allele of both A and B is crossed to an unpigmented line, and their F1 progeny is selfed, what fraction of the F2 generation will be unpigmented?
A) 0
B) 1/4
C) 1/8
D) 1/16
E) 1/32