Gametogenesis: The Origin of Eggs and Sperm

Gametogénesis

The spermatogenesis is the process by which the human body produces sexual gametes, which are eggs and sperm. Each cell undergoes different changes to reach maturity, and this process is essential for human reproduction. Here, we explain more about this topic.

 

Oogenesis

In spermatogenesis, the process of forming female sexual gametes (eggs) is called oogenesis. This takes place in the ovaries and consists of two stages: the first stage occurs during embryonic development, where eggs only develop into primary oocytes. A woman is born with approximately 1 million primary oocytes, of which only around 400,000 remain viable for further development during the second stage, which begins at puberty. At this point, when sexual maturity is reached, oogenesis resumes, and the primary oocytes are stimulated to continue their development, leading to ovulation.

 

Spermatogenesis

The spermatogenesis The male process involves the formation of sperm in the testicles. Similar to women, the process begins during embryonic development, resulting in cells called spermatogonia, which reside in the testicular cords and remain there until puberty. At that time, they transform into primary spermatocytes, and subsequent cell division gives rise to mature spermatozoa suitable for fertilization.  

 

Gametogenesis and assisted reproductive

The spermatogenesis technique plays a vital role in reproduction. The union of both gametes results in 23 pairs of chromosomes, and errors during cell division in the process can have repercussions on the embryo. For example, it may lead to an increase or decrease in the number of chromosomes, causing a genetic anomaly in the baby or resulting in a miscarriage.

As age increases, the likelihood of problems during cell division in embryo formation also rises. Therefore, older couples who wish to have a baby are recommended to seek fertility treatments. In these Assisted Reproduction processes, analyses are conducted to ensure the correct fusion of cells. Genetic studies are also essential to prevent chromosome abnormalities and ensure the birth of a healthy embryo.

At Procrea we offer all the necessary tests to support you in your journey, such as Preimplantation Genetic Testing for Aneuploidy (PGT-A, PGT-M or EMBRACE which we conduct in collaboration with Igenomix. If you have any questions about this topic or wish to begin fertility treatment, please don't hesitate to reach out to us. We will be delighted to assist you in your path to motherhood.

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