In human female sex chromosome is homomorphic that is same sex chromosome (XX ) while male is heteromorphic (XY). So during sexual reproduction when female gamete is formed inside female body that is inside eggs all cell will get one copy of XX chromosome. So each female gamete has one copy of X chromosome.
Human females have two X- chromosomes called sex chromosomes. Dining meiosis at the time of gamete formation, one X-chromosome enters each gamete. Hence, all the gametes possess an X- chromosome
A girl child is born by the fusion of two x chromosomes( One x chromosome from father and one x chromosome from mother). This means a female has two x chromosomes ( i.e xx).so all gamates formed in human females have only x chromosomes!
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