Question

Terminal meiosis occurs in

• A. Sporocyte
• B. Gametocyte
• C. Zygote
• D. Gamete

Answer 1

The correct option is B Gametocyte

Gametic or terminal meiosis occurs in animals. The cells resulting from the two meiotic divisions are transformed into sperms or eggs without further cell division. The process is as follows:

Germs cells divide repeatedly to give rise to many generations of gonocytes. The gonocytes become primary gonial cells which are transformed into spermatogia or oogonia. The spermatogonia and oogonia are transformed into primary spermatocytes and primary oocytes, respectively. Each primary sperm atocyte undergoes the first maturation division and forms two secondary spermatocytes. Each secondary spermatocyte undergoes the second meiotic division to give rise to two spermatids, which are then transformed into spermatozoa. In the female, during the first meiotic division the primary oocyte divides into a large cell. the secondary oocyte, and a smaller cell, the first polar body. The second oocyte undergoes the second melotic division and divides into an ovum and a second polar body. The first polar body may or may not divide into two.