In drosophila yellow body is due to an x linked gene that is...

In Drosophila, yellow body is due to an X-linked gene that is recessive to the gene for gray body. a. A yellow female is crossed with a gray male. The F1 are intercrossed to produce the F2. Give the genotypes and phenotypes, along with the expected proportions, of the F1 and F2 progeny. b. If the F2 flies in part (a) mate randomly, what are the expected phenotypic proportions of flies in the F3?

In Drosophila, yellow body is due to an X-linked gene that is recessive to the gene for gray body. a. A homozygous gray female is crossed with a yellow male. The $F_{1}$ are intercrossed to produce $F_{2}$. Give the genotypes and phenotypes, along with the expected proportions, of the $\mathrm{F}_{1}$ and $\mathrm{F}_{2}$ progeny. b. A yellow female is crossed with a gray male. The $\mathrm{F}_{1}$ are intercrossed to produce the $\mathrm{F}_{2}$. Give the genotypes and phenotypes, along with the expected proportions, of the $\mathrm{F}_{1}$ and $\mathrm{F}_{2}$ progeny. c. A yellow female is crossed with a gray male. The $\mathrm{F}_{1}$ females are backcrossed with gray males. Give the genotypes and phenotypes, along with the expected proportions, of the $\mathrm{F}_{2}$ progeny. d. If the $F_{2}$ flies in part $b$ mate randomly, what are the expected phenotypic proportions of flies in the $\mathrm{F}_{3} ?$ (FIGURE CAN'T COPY)

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