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Many married couples long to have an offspring of this or that sex. Researchers, though, feel doubts whether it is possible to adjust the sex of a child.

Males play a decisive role in identifying of the embryo's sex. It is important to learn that every ovigerm bears simply X-chromosome and never has Y-chromosome. Both chromosomes (X and Y) are held in male sex cells. Because of this reason male chromosome define the baby's sex. Picture the situation when it is possible for ovigerms to be fecundated by same cells: only girls would appear. Meanwhile, there're pairs that bear just boys or girls. The researches affirm that boys appear oftener than girls though this inequity is light. Sex kiev may divert your notice from all these complicated thoughts.

Right after the penetration of sperm into ovigerm nuclei start to come closer to each other. The process of creating chromosomes starts at the time when the nuclei start growing in volume. Two cells bear a set of chromosomes which are circumscribed by a thin sheath which bursts at the proper time. The nuclei of both cells come close to each other and fuse into a single entity. A germ with stuffed genetic material creates as a consequence of this merger.

It was supposed in the years of old that boys come from the right testis, and girls - from the other one. Therefore, in order to conceive the hoped-for baby it was recommended different acrobatic poses. Read the rest of this entry »