Question

How can an unequal distribution of chromosomes occur in a fertilized egg?

Answer 1

During the process of fertilization of egg and sperm some times cause the addition or subtraction of chromosomes it will cause the too many chromosomes or less chromosomes it divide every cell in the body due to its abnormality in the partispation of chromosomes during cell division. it will cause the chromosomal disorder s or genetic disorders .

Due unequal distribution of chromosome s cause the

Allosomal disorder

Ex: klinefelter's syndrome, Turner's syndrome

Autosomal disorders

Ex: Down syndrome, Edward syndrome , patau syndrome etc.