3 A female fruit fly exhibits the autosomal recessive traits

Last updated: 8/11/2023

3 A female fruit fly exhibits the autosomal recessive traits ebony body genotype ee and brown eyes genotype bb Each trait is determined by a single gene and the two genes involved are on different chromosomes This female is crossed to a male from a true breeding line with the normal phenotypes gray body and red eyes All the F progeny are gray with red eyes While a Punnett Square could be a helpful tool to answer these questions challenge yourself to use the laws of probability and logical deduction to answer these questions more efficiently a F flies are intermated to produce F2 progeny What proportion of these progeny will have each of the phenotypes described gray with red eyes ebony with red eyes gray with brown eyes ebony with brown eyes b What proportion of the F population described in part a will have each of the genotypes listed Bb ee Bb Ee bb EE c An F male is crossed to an ebony female with brown eyes What phenotypic classes are expected among the F2 progeny of this cross in what proportions d A cross between two flies from the F2 population described in part a yielded progeny that were mostly gray with brown eyes 3 4 the rest were ebony with brown eyes 1 4 What were the phenotypes and genotypes of the parents e From the F population described in part a a cross between two flies yielded progeny that were half gray with red eyes and half ebony with red eyes What were the phenotypes and genotypes of the parents f An ebony fly with brown eyes is mated with an ebony fly with red eyes All the progeny had ebony bodies half had red eyes and half had brown eyes What was the genotype of the ebony fly with red eyes g Two true breeding lines are established one ebony with red eyes and another gray with brown eyes Flies from these two lines and crossed and the F progeny are intermated What phenotypic classes are expected among the F2 progeny in what proportions