Which scientist discovered sex determination in $Melandrium$ $album$?

In the buccal cavity slide cell of an individual, we observe a dark-stained body near the nuclear membrane. The genotype of the individual may be

What is the $X-$body as described by Henking?

Homologous chromosomes which are present in both males and females are known as:

In humans,sex-linked traits are primarily transmitted by:

$A$ fruit fly is heterozygous for sex-linked genes and is mated with a normal female fruit fly. In what proportion will the male-specific chromosomes enter the egg cells (in $:1$)?