Week by week pregnancy guide:
1st week
we congratulate you on your decision to become a parent!
Most of the women were fertile the middle of their menstrual cycles or about two weeks according to their last menstrual period.
It is more likely that they designing in range of approximately four days.
Ovulation occurs. Ovulation is the descent of an egg in one of the fallopian tubes where it awaits the arrival of the sperm.
Only about 400 sperm cells will survive the journey of ten hours at the fallopian tubes to reach to the egg, while one succeeded in crossing the membrane of the egg. In 20 minutes, the chosen destination is reached.
If the sperm contains a Y chromosome, your baby will be a boy if it's a chromosome X lets you welcome a daughter.
* The Y chromosome is one of the two sex-determining chromosomes in most mammals, including humans. In mammals, it contains the gene SRY, which triggers testis development if present. The human Y chromosome is composed of about 60 million base pairs.
* The Y chromosome is one of the two sex chromosomes in humans (the other is the X chromosome). The sex chromosomes form one of the 23 pairs of human chromosomes in each cell. The Y chromosome spans about 58 million building blocks of DNA (base pairs) and represents almost 2 percent of the total DNA in cells.
* Sperm Cell - The sperm cell enters into the main part of the egg, the ooplasm, achieving successful fertilization
* The term sperm is derived from the Greek word (σπέρμα) sperma (meaning "seed") and refers to the male reproductive cells. In the types of sexual reproduction known as anisogamy and oogamy, there is a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell.
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