Difference Between Spermatogenesis And Oogenesis

Oogenesis and spermatogenesis are the processes of formation of male and female gametes. Spermatogenesis occurs in the testis to form male gametes called sperm. while the oogenesis occurs in the ovary to form female gametes called eggs. The major difference between spermatogenesis and oogenesis is that in spermatogenesis, four sperms are produced from each sperm mother cell (spermatogonium). In oogenesis, only one functional ovum is produced from each egg mother cell (oogonium). Both are the reproductive phases that include the following – multiplication, growth, maturation, and differentiation. In this article, you will learn and understand the basic differences between spermatogenesis and oogenesis in detail.

Difference Between Spermatogenesis And Oogenesis in Tabular Form



Help in the Formation of sperms Helps in the formation of ova
Forms motile gametes Forms non-motile gametes
Occurs in testes Inside the ovary, it occurs.
Stages are completed in the testis. A major part of oogenesis occurs inside the ovary. While some stages occur in the oviduct.
Continuous process Discontinuous process
Four sperms are produced which have equal cytokinesis that occurs during spermatogenesis. It produces one large ovum and tiny polar bodies which have Unequal cytokinesis occurs during oogenesis
Too short growth phase. Prolonged growth phase.

Spermatogenesis Vs. Oogenesis – Overview

There is a stage known as a zygote, where every life cycle starts. The zygote is a 2n cell formed through the fusion of a sperm and an egg. Male reproductive cells are called sperms, while the female reproductive cell is called an egg. fertilization is the process of the fusion of cells. Fertilization results in the formation of a zygote. Spermatogenesis occurs inside the seminiferous tubules of a testis. while the oogenesis occurs inside the ovary. Spermatogenesis is a sperm that is motile and the product form in an oogonium is ovum which is non-motile.

How are sperms produced?

The development and origin of the sperm cells within the male reproduction system i.e. testes is called spermatogenesis. The testes consist of numerous thin tightly coiled tubules called the seminiferous tubules. The sperm cell is formed within the walls of the tubules. There are many randomly scattered cells known as Sertoli cells within the walls of tubules. The major function of Sertoli cells is to support and nourish the immature sperm cells by giving them blood products and nutrients. The Sertoli cell helps to transport nutrients from the outer surface of the seminiferous tubule to the central channel of the tubule. Sperms are formed by testes. An immature germ cell forms in 74 days to reach final maturation, during this growth process there are intermittent resting phases.

How Are Eggs Produced?

Eggs are formed in the ovary of females. The process of formation of eggs is called oogenesis. in the ovary, eggs are formed from the oogonia. The egg is formed from the diploid primary oocyte by meiosis. meiosis I and II occurs in the formation of eggs. The process of Oogenesis takes place in a month, starting from puberty and ending at menopause.

What is Spermatogenesis?

It is a process of the reproductive stage where the production of haploid sperms occurs from “spermatogonium” in a male gonad, i.e. seminiferous tubules of a testis. It develops first from the germinal epithelial lining of the seminiferous tubules which are diploid stem-cell having totipotency. In spermatogenesis, the maturation division is equal without the polar bodies. the sperms that are produced are smaller in size, greater in number, and motile

What is Oogenesis?

Oogenesis is the process of the formation of eggs. Oogenesis occurs in the ovaries of the female. One oogonium forms a single ovum. Oogenesis produces female gametes and occurs in the ovary. One functional ovum is produced from each oogonium. In the oogenesis process, the maturation division is unequal with a large ovum and 3 small polar bodies. The size of eggs is much larger, fewer in numbers, and nonmotile.


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