If a yellow body, white-eyed Drosophila is crossed with wild brown body red eyes drosophila. Then what would be the frequency of recombinants in $F_1$ generation?

Q. When a white eyed male Drosophila is crossed with wild red eyed female in the $F_2$ generation the ratio of red and white eyed Drosophila is :

Q.

In Drosophila, the red-eye character is dominant over white eye character. When a homozygous red-eyed individual is crossed with a homozygous white-eyed individual, and individuals of $F_1$ generation are intercrossed, 12 individuals are produced. White-eyed individuals of these will be:

Q. In Drosophila, white eye colour is recessive X-linked trait while red eye colour is dominant. A white eyed female is crossed with red eyed male. The female offspring with red eye colour would be.

Q. White eye is a sex linked recessive trait in Drosophila. In cross of white eyed female with normal male, what are the phenotypes of $F_1$ generation?

Q. When a white eye Drosophila male$\left(X^{r}Y\right)$ is crossed to a red eye female $\left(X^R{X}^R\right)$, in the $F_2$ generation all the females are red eyed and $50\%$ males are white eyed. In a criss cross test, when a white eyed female$\left(X^r{X}^r\right)$ is crossed to a red eye male$\left(X^{R}Y\right)$, the $F_1$ generation off spring had white eyed males while the female offspring had red eyes. Instead of crossing of a white eyed female $\left(X^r{X}^r\right)$ to a red eyed male $\left(X^{R}Y\right)$, white eye female $\left(X^r{X}^r\right)$ to white eye male $\left(X^{r}Y\right)$ is crossed, the $F_1$ generation will have the following phenotypes and genotype.