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My memories
Posted in 2013

Among the spermatogonia (all in all, over 1 billion in both testicles) that form the basal layer of the germinal epithelium, several types can be distinguished: certain type Acells are seen as spermatogonia that divide mitotically and reproduce themselves (homonymous division), whereby the spermatogonia population is maintained.
The beginning of spermatogenesis is introduced through the so-called heteronymousdivision, in which the daughter cells (second group of type A cells) remain bound together by thin bridges of cytoplasm. Through the preservation of these cytoplasmic connections, spermatogonia are inducted into the spermatogenesis process.

After a further mitotic division type B spermatogonia are engendered that also divide themselves mitotically into primary spermatocytes (I).

The freshly created primary spermatocytes (I) now enter into the first meiosis. They then go immediately into the S phase (that is, into the preleptotene meiosis), double their internal DNA, leave the basal compartment and reach the special milieu of the luminal compartment. Following the S phase, these cells attain the complex stage of the prophase of the meiosis and become thereby noticeably visible with a light microscope.

This prophase, which lasts 24 days, can be divided into five sections:
  • Leptotene
  • Zygotene
  • Pachytene
  • Diplotene
  • Diakinesis
In the prophase in every germ cell a new combination of maternal and paternal genetic material occurs. After the long prophase follow the metaphase, anaphase and telophase that take much less time. One primary spermatocyte yields two secondary spermatocytes.

The secondary spermatocytes go directly into the second meiosis, out of which the spermatids emerge. Since in the secondary spermatocytes neither DNA reduplication nor a recombination of the genetic material occurs, the second meiosis can take place quickly. It lasts only around five hours and for that reason secondary spermatocytes are rather seldom seen in a histological section. Through the division of the chromatids of a secondary spermatocyte, two haploid spermatids arise that contain only half the original DNA content.

Besides the sperm cells the spermatids are the smallest cells of the germinal epithelium. In a process lasting several weeks (so-called spermiogenesis or spermiohistogenesis) they are transformed into sperm cells with the active assistance of the Sertoli's cells.

My advise
1....  To form healthy sperm to give birth to a Healthy child takes more than 64 days.
2... Generally when a male is entering in youth stage i.e. 15 to 18 years but full sperm structure develops after 21 years only
3... The male should be complete mature mentally i.e. when he can take right decision at what ever age may be he should give birth to the child.
4... They should follow healthy habits to form healthy sperm
5... Their mind should be mature before taking the decision to healthy child with super qualities.
6...  If the couple wish to give birth to Healthy and Brilliant child they should make a gap of 64 days
to have sex,,  They should eat healthy food and drink sufficient water.
7.... The couple should sleep 5 to 7 hours per day.

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