Linkage groups can be separated during . . . . . . in meiosis.

What will be the number of linkage groups in maize if it has $10$ pairs of chromosomes?

Which organism did $T.H. Morgan$ use in his experiments on linkage and recombination?

In a fruit fly,the $X$-chromosome linkage map has a total length of $66$ units,with the yellow body gene $(y)$ at one end and the bobbed hair gene $(b)$ at the other end. What will be the recombination frequency between these two genes $(y$ and $b)$?

The first attempt to demonstrate linkage in plants was made in $.....$.

In the construction of chromosome maps,the evidence is derived mainly from