Which sex chromosomes are present in human beings?

Define sex chromosomes.

Nuber of chromosomes found in human being is

Write sex-chromosome of male

haemophilia in human being is

How Is sex determined in human beings?

How many chromosomes are present in the nucleus of the human cell?

Assertion: Extranuclear chromosomes are present in mitochondria and plastids Reason: They are prochromosomes or organelle chromosomes.