15.
in fruit flies, gray body color (g) is dominant
over black body color (g). what kind of offspring
would you expect from parents who are both
heterozygous for body color (gg x gg)?
a. 0% gray, 100% black
b. 25% gray, 75% black
c. 75% gray, 25% black
d.
100% gray, 0% black

Part a - which gene to compare? in this exercise, you will use the cytochrome c oxidase i (coi) gene to investigate relationships among salmon species. (this gene encodes a protein that functions in the mitochondrial electron transport chain.) you will compare the coi gene sequences from your salmon test samples to the standard sequences for each salmon species. in order for the coi gene to be useful for distinguishing among the different salmon species, which three statements must be true?