Question

Number of meiosis required to produce 101 zygotes
A. 126
B. 127
C. 125
D. 26

Answer 1

Hint: Meiosis is a type of cell division that occurs in germ cells in order to form haploid gametes. This type of division takes place in sexually reproducing organisms. Meiosis involves two rounds of the division of the parent cell.

Complete answer: A biological process in which a single cell is divided two times to produce four cells containing half the original amount of genetic information. Meiosis occurs in the germ cells of the sexually reproducing organism to form gametes such as egg and sperm in human beings. Gametes are haploid cells that consist of only one copy of each maternal and paternal chromosome. Before the division of the cells, crossing over of the genetic material from the maternal and paternal chromosome takes place which leads to the formation of new combinations on each chromosome. In human males, one meiotic division of germ cell produces four male gametes called sperm. So, 26 meiotic divisions of male germ cells produce 104 male gametes. In females, one meiotic division produces one female gamete called ova. 101 meiotic division produces 101 female gametes. The fusion of one male and one female gamete produces a zygote. So, 101 male and female gametes are fused to form 101 numbers of zygotes. Therefore, the 101 male gametes produced from 26 meiotic divisions and 101 female gametes produced by 101 meiotic divisions produce 101 zygotes. Thus, the number of meiosis required to produce 101 zygotes is 127.
So, option B is the correct option.

Note: Aneuploidy is a result of errors in meiosis. It is the major cause of the most frequent genetic cause of developmental disabilities and miscarriage. Aneuploidy refers to the abnormal number of chromosomes present in the cell.