Number of autosomal chromosomes in Drosophila.

In which type of sex determination do both male and female have the same number of chromosomes?

In which of the following organisms is the structure $Male \rightarrow n$ and $Female \rightarrow 2n$ observed?

Explain: When and how the sex of the baby is determined?

The character of organisms is said to be sex-linked when its gene is carried on:

In $Bonellia$,all larvae are genetically and cellularly identical. The male individual lives in the uterus of the female. If a larva settles near the proboscis of an adult female,it develops into a male. If the larva develops freely in the water,it develops into a.....