The percentage of crossing over will be more if:

The lack of independent assortment of two genes $A$ and $B$ in the fruit fly $Drosophila$ is due to:

State the conclusions drawn from Morgan's experiments on linkage and recombination.

. . . . . . $(B)$ . . . . . . used the frequency of recombination between gene pairs on the . . . . . . $(A)$ . . . . . . as a measure of the distance between genes and mapped their position on the chromosome.
$(A) \quad\quad (B)$

What is the name of the pea species used by Bateson and Punnett in their experiments?

When white-eyed and miniature-winged $Drosophila$ $melanogaster$ is crossed with its wild type,it produces which of the following percentages of recombinants (in $\%$)?