What would be the result if the chromosomes in sex cells were not reduced by half number of through meiosis?
Refer to explanation
Nondisjunction is when the chromosomes fail to divide leading to an abnormal number of chromosomes in the gamete. when it fuses to form an embryo, the embryo would have an extra set of chromosomes which could lead to mutations in the genes. Examples of disorders caused by nondisjunction are trisomy and Down Syndrome.