In Drosophila, the genes for withered wings (whd), smooth abdomen (sm) and speck body (sp) are located on chromosome 2 and are separated by the following map distances:
whd ----------
A female with withered wings and a smooth abdomen was mated to a male with a speck body. The resulting phenotypically wild-type females were mated with males that had the mutant phenotype for all three traits, producing 1000 offspring. Assume that the interference for these genes is 0.3
1. How many offspring are expected to have the following phenotypes?
withered wings, speck body
OR
smooth abdomen
2. How many offspring are expected to have the following phenotypes?
withered wings, speck body, smooth abdomen
OR
wild type
3. How many offspring are expected to have the following phenotypes?
withered wings, smooth abdomen
OR
speck body