Question

what is nondisjunction?

How does it relate to meiosis?

Answer 1

Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly during cell division.

 What is Nondisjunction in Meiosis?

Nondisjunction during meiosis produces eggs or sperm cells that don't have the normal number of chromosomes.All of your body cells, except eggs and sperm cells, have two sets of 23 chromosomes, for a total of 46 chromosomes. Having two sets of chromosomes is called diploid and designated as 2n. Eggs and sperm cells are called gametes, and they have only one set of 23 chromosomes, which is called a haploid, or n. When two haploid gametes (one egg and one sperm cell) fuse during fertilization, a diploid cell is produced. This diploid cell has one set of chromosomes from the egg and one set of chromosomes from the sperm cell. This diploid cell will divide and develop into a baby.