EVERYDAY SCIENCE

Detailed explanation-1: -Meiosis is a kind of cell division wherein the chromosome number in the cells reduces resulting in haploid cells. Hence this cell division is known as a reduction division. It includes two cycle of cell division known as meiosis I and meiosis II .

Detailed explanation-2: -Meiosis I is called a reductional division, because it reduces the number of chromosomes inherited by each of the daughter cells.

Detailed explanation-3: -In meiosis I, the division is reductional, while in meiosis II, the division is equational. In reduction division, the chromosome number is reduced from diploid (46 chromosomes) to haploid (23 chromosomes) state. Also known as first meiotic division or first meiosis.

Detailed explanation-4: -Mitosis is characterised by equal division because the chromosome numbers in the daughter cells remain same as that of parent cell. While reduction division is the characteristic of meiosis. Q. Assertion: Mitosis is known as equational division and meiosis is known as reduction division.

Detailed explanation-5: -Meiosis II is not a reduction division because, although there are fewer copies of the genome in the resulting cells, there is still one set of chromosomes, as there was at the end of meiosis I. Meiosis II is, therefore, referred to as equatorial division.