**Genetics Problem in Drosophila**In *Drosophila* (fruit flies), the genes for body coloration and eye size are located on different chromosomes. This implies that these genes assort independently during meiosis.- **Dominant Traits:** - **Body Color:** Normal-colored bodies. - **Eye Size:** Normal-sized eyes. - **Recessive Traits:** - **Body Color:** Ebony-colored (very dark) bodies. - **Eye Size:** Eyelessness (absence of eyes).**Parental Lines:**- **Line A:** True breeding for normal bodies and normal eyes.- **Line B:** True breeding for ebony bodies and eyelessness.When these lines are crossed (A x B), the F1 generation will have the genotype heterozygous for both traits (normal body and normal eyes, as normal traits are dominant).In the F2 generation, resulting from the self-cross of F1 individuals, we need to determine what fraction will exhibit exactly one of the recessive traits.**Choices:**1. \( \frac{1}{16} \)2. \( \frac{3}{16} \) (This option is selected.)3. \( \frac{3}{8} \)4. \( \frac{9}{16} \)5. \( \frac{5}{8} \)**Dominant-Recessive Trait Combinations in the F2 Generation:**To calculate the proportion displaying exactly one recessive trait, we identify flies with either:- Normal colored body and eyelessness, or- Ebony colored body and normal-sized eyes.Using a Punnett square, we analyze the dihybrid cross:\[ AaBb \times AaBb \]Where:- \( A \) and \( a \) represent the alleles for body color.- \( B \) and \( b \) represent the alleles for eye size.From this cross, the genotype ratios for the F2 generation are:- 9: Normal body and normal eyes (A_B_)- 3: Normal body and eyeless (A_bb)- 3: Ebony body and normal eyes (aaB_)- 1: Ebony body and eyeless (aabb)Thus, the fraction of flies showing exactly one recessive trait:\[ \frac{3}{16} + \frac{3}{16} = \frac{6}{

Name: **Genetics Problem in Drosophila**In *Drosophila* (fruit flies), the
Uploaded: 2024-03-20T06:43:04.000Z
Channel: Bartleby
Description: **Genetics Problem in Drosophila**In *Drosophila* (fruit flies), the genes for body coloration and eye size are located on different chromosomes. This implies that these genes assort independently during meiosis.- **Dominant Traits:** - **Body Colo