Whose number of sex chromosome are normal

A person who is trisomic for twenty first pair of chromosomes is or Number of sex chromosomes is normal in

Number of sex chromosome in human:

Sex chromosomes are called :

The number of sex chromosomes is found to be normal in

The number of sex chromosomes is found to be normal in

The number of sex chromosomes in human primary spermatocyte is

Sex chromosome are also knon as :

Sex chromosomes are also called