Question

XX male and XY female are very in humans. They are due to
1.genes of Y chromosome are on X chromosome
2.crossing over between X and Y
3.Non disjunction of chromosomes
4.All of these

Answer 1

hyy dear.....

here ur answer is.....

genes of Y chromosome are on X chromosome

hope this will help you

Answer 2

heya---------

ur answer...........

1.genes of Y chromosome are on X chromosome....

tysm.........@kundan