Question

How many sperms and ova will be formed by a primary spermatocyte and a primary oocyte?

Answer 1

Spermatogenesis:

1. Spermatogenesis is the process by which haploid spermatozoa are produced.
2. First, mitotic division occurs, resulting in the formation of the primary spermatocyte, and later, mitotic division results in the formation of spermatids, which then form the spermatozoa.
3. The primary spermatocyte is formed first in the process of spermatogenesis; it is diploid in nature and has 46 chromosomes.
4. These primary spermatocytes go through meiosis I, which results in the formation of two secondary spermatocytes.
5. Later, each secondary spermatocyte produced by meiosis I divide again during the second meiosis, or meiosis II, to form the two spermatids.
6. These spermatids are later transformed into spermatozoa.
7. So two spermatids are formed from each secondary spermatocyte, for a total of four spermatids.
8. So four spermatozoa are formed from a single primary spermatocyte. Later, the sperm produced is released through a process known as spermitation.

Oogenesis:

1. Oogenesis is the process by which ova, also known as female gametes, are formed, and the produced female gamete is known as an ovum.
2. In the case of oogenesis, primary meiosis occurs first, forming the primary oogonium, followed by meiosis II, which forms the ovum and polar bodies.
3. So one ovum is formed from one oogonium.