The Barr body is observed in

Where are the genes of incomplete sex linkage situated?

In which of the following is sex determination carried out by the female?

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:

Which of the following is produced from an unfertilized egg?

The person who discovered $Y$ chromosomes was