You are a researcher who is interested in three genes indrosophila: The a gene, the b gene and the c gene. You think thegenes may be linked, so you decide to do a cross using atrue-breeding a+/b+/c+ fly and an a/b/c fly. The F1 generation isall a+/b+/c+. However, when the F1 generation is bred to atrue-breeding a/b/c fly, it yields the following offspringphenotypes: 589 a+/b+/c+ ; 603 a/b/c ; 183 a+/b/c ; 176 a/b+/c+ ;92 a/b+/c ; 95 a+/b/c+ ; 4 a+/b+/c ; 6 a/b/c+. Is this the expectedratio for unlinked genes (hint: the critical chi-squared value is7.815)?
