The genes,which are confined to the differential region of the $Y$ chromosome only,are called:

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

Which type of sex determination mechanism is observed in insects?

Given below are two statements.
Statement $I$ - $X$ Chromosome has a large amount of euchromatin and a small amount of heterochromatin.
Statement $II$ - The homologous region of the $X$ Chromosome contains a smaller number of genes than the $Y$ Chromosome.
In the light of the above statements,select the correct option given below:

Describe the process of sex determination in humans.

$A$ gynandromorph is an animal that possesses $......$.