Lobed (L) is sex linked and dominant. Antennaless (al) and eyeless (ey) are unliked recessive autosomal loci. A homozygous wild-type male is crossed to a homozygous lobed (L), antennaless (al), and eyeless (ey) female . The F1 is inbred to produce F2. Among total F2 fles, how frequently would you expect to find lobed, antennaless, eyeless female? Examining the Frequencies of Lobed, Antennaless, and Eyeless Genotypes in an F2 Cross

Examining the Frequencies of Lobed, Antennaless, and Eyeless Genotypes in an F2 Cross

In an F2 cross between a homozygous wild-type male and a homozygous lobed (L), antennaless (al), and eyeless (ey) female, the lobed trait is sex-linked and dominant, while the antennaless and eyeless traits are linked recessive autosomal loci. In the F2 generation, the expected frequency of lobed, antennaless, eyeless females would be one-fourth of the total F2 population. This is because the female parent will have all three traits, while the male parent will only have the lobed trait (Acevedo-Rodríguez and Strong, 2020). In other words, the F2 generation will be composed of 75% lobed males and 25% lobed, antennaless, eyeless females (Friedman et al., 2016). This is due to the fact that the female parent will pass on both the dominant and the recessive traits, while the male parent will only pass on the dominant trait. Therefore, of the total F2 population, females with the genotype LLalal eyey would be expected to occur with a frequency of 0.25 (Vignaux, 2018; Robertson, 2021).
Exploring the Genetics of Lobed, Antennaless, Eyeless Females. The genetic basis behind the expression of traits in lobed, antennaless, eyeless (Lalal eyey) females is an area of study that has been of significant interest for scientists since the mid-1900s. This is due to the fact that the sex-linked, dominant L gene and the recessive autosomal loci al and ey can result in the expression of the phenotype when present together in a female. Cont…