Meaning of Gametogenesis
What is Gametogenesis:
Gametogenesis is the process by which certain organisms, such as humans and some plants, initiate the process of cell division to form gametes or sex cells.
In Biology, gametogenesis is observed in humans, animals, and plants. The process begins with the division of diploid germ cells to form gametes (haploid cells).
In this way, each living being has different biological cycles that define the amount, form and moment in which gametogenesis will be activated, but all of them are characterized by their sexual reproduction.
Gametogenesis occurs in germ cells, which contain genetic information. A diploid germ cell, that is, containing only half of the genetic information in a set of chromosomes, divides in meiosis to generate 4 haploid cells or gametes.
In this way, gametogenesis allows both male and female gametes to contain only half of the genetic information, thus generating genetic diversity with the mother and father genes.
Gametogenesis in humans is different for the formation of male gametes and female gametes. It is for this reason that male gametogenesis is called spermatogenesis and female gametogenesis is called oogenesis.
Gametogenesis and oogenesis
Female gametogenesis, or also known as oogenesis, refers to the meiosis of diploid cells that give rise to the formation of female oocytes or gametes. Oogenesis in humans takes approximately 28 days and they are deposited in the ovaries.
Gametogenesis and spermatogenesis
In male gametogenesis or spermatogenesis, diploid cells undergo meiosis to give rise to the formation of male sperm or gametes. In humans, this process takes approximately 74 days and they are stored in the testicles.
Gametogenesis and fertilization
Gametogenesis is the process in which sex cells form. In this sense, fertilization would not be possible without gametogenesis.
From the opposite point of view, it is in the fertilization that the complete genetic material is determined, which will define in due course, if the gametogenesis will be female or male.
Gametogenesis and meiosis
Meiosis plays a fundamental role in gametogenesis, as it is the process of cell division that allows a diploid cell to divide into haploid cells, also known as sex cells.
Gametogenesis in plants
Gametogenesis is generated in the so-called higher plants that reproduce sexually.
Plants generate, through meiosis, the division of diploid cells for the formation of male and female gametes. The female gametes or ovules are located in the embryo sac of the flowers, waiting to be fertilized by male gametes, generally in the form of pollen.