Y is for Y-Chromosome

[image error] Chromosomes are long pieces of DNA found in the center (nucleus) of cells. DNA is the material that holds genes. It is considered the building block of the human body.Two of the chromosomes (the X and the Y chromosome) determine if you are born a boy or a girl (your gender). They are called sex chromosomes:Females have 2 X chromosomes.Males have 1 X and 1 Y chromosome.The mother always contributes an X chromosome to the child. The father may contribute an X or a Y. Therefore, it is the c...