The important question: the boy or the girl?

Crucial importance at origin of the child of a certain floor has merge of female and man's genes.
Set of threadlike formations of the cellular kernel named chromosomes, defines the basic hereditary properties of cages and organisms. Female яйцеклетка and man's сперматозоид contain on 23 such chromosomes (a chromosomal spiral, or a chromosomal chain) at which merge the healthy human body develops.
The Y-chromosome causes a birth of the boy.
Everyone healthy яйцеклетка has always an identical set of chromosomes while in сперматозоиде 22 chromosomes are identical always only. Twenty third can be or a Y-chromosome, or the H-chromosome. It just also defines a sex of future child. If 23rd is a Y-chromosome the boy if the H-chromosome the girl is born. On a sex of future child, thus, solving influence is rendered by the father, however somehow to change a sex of a child it not in a condition.
Whether it is possible to affect that the child of a certain floor was born meaningly?
From ancient times and about this day tried to affect a sex of future child meaningly. But till now it was not possible to develop a method which would yield the guaranteed result.
About 40 years ago German gynecologist professor Unterberger spent experiences, chemical by raising or lowering acidity degree to a vagina, trying to affect thus on a sex of future child. The known American gynecologist professor Shettlz last years works over this method. However till now thorough and convincing data about reliability of this way of "programming" of a sex of future child are not received enough.
Last years the attention one more method draws. One American, the gynecologist by a trade, has paid attention that as a result of artificial fertilisation which always tried to carry out precisely in day овуляции, was born much more boys, than girls. On the basis of this supervision the German scientific doctor Hattsold, prosecuting population subjects, has developed a way of "programming" of a sex of a child. This way is based on following laws: сперматозоиды with a Y-chromosome (which "is responsible" for a birth of the boy) движутся faster, but have smaller life expectancy. If sexual intercourse occurs precisely during the moment овуляции they appear at the purpose, i.e. at яйцеклетки, the first. So there is a conception of the boy. If the sexual intercourse occurs two days prior to овуляции by the moment овуляции сперматозоиды with Y-chromosomes die off and яйцеклетку impregnates сперматозоид with the H-chromosome. Then the girl is born.

As it is possible to establish a sex of a child till a birth
The modern medicine solves a problem of definition of a sex of a child till a birth, in a womb of mother. Today there are two possibilities to make it. In last third of pregnancy — by means of ultrasound, however it is not so reliable way. The second way consists that a hollow needle suck away a small amount околоплодных waters from плодного a bubble. As a result of cultivation and colouring containing in околоплодных waters of cages of a skin of the child it is possible to define its sex with accuracy. This way is not absolutely safe for health of mother and the child and consequently only to satisfaction of parental curiosity it, certainly, do not apply.

25.11.2006