Biology 2003 JAMB Past Questions - Question 26: Homologous pairs of chromosomes separate during

Correct Answer

D

Explanation

Meiosis is cell division which forms gametes with haploid number of chromosomes. A diploid parent cell gives rise to four haploid gametes. At the beginning of meiosis, each member of a pair of homologous chromosomes moves to lie side by side so that all parts of the two chromosomes .match exactly The chromatids of one chromosome are in contact with that of the other chromosome at certain points called chiasmata. Meiosis involves two divisions. The first division involve the separation of the members of the homologous pair from one another. The second division involves the separation of the chromatids of each chromosome. Mitosis is the division of a body cell into two daughter cells and it occurs during growth and replacement of damaged tissues.' Cleavage is series of cell division which a fertilized egg (zygote) under goes. Cytolysis is the dissolution of ceils especially by breaking down of their outer membrane.