In old maidens it is possible to remain because of air

It is known, that girls in a stage of pre-natal development are more healthy and are viable. Boys with bolshej probability can be lost, and not been born or to receive complications during birth. The group of researchers of the Brazilian university the Dignity-paulo has counted up number of the babies who were born with 2001 for 2003, and has received following results: in ecologically pure areas of 51,7 % of newborns boys, and there where cleanliness of air left much to be desired made, this figure decreased to 50,7 %

Then Brazilians have decided to experiment on mice. They have divided recently born males on two groups and within 4 months of one have forced to breathe same air, as all of us, and have placed others on the Wednesday cleared of harmful impurity. After that to them have sent the females, too breathing filtered air. As a result representatives of the first group have bred, where the parity males/females made 0,86, and at parents from the second group the parity 1,34 has turned out. Besides, tests have shown, that "dirty" mice had big problems with sperm.

During separate experiment it was found out, that the pregnant mummies who have taken a breath of crude air, with bolshej probability will fail at a posterity birth. Professor Horhe Aljak, the head of group of scientists, believes, that, most likely, pollution causes genetic defects which do a fruit impractical. Under other version, the adverse ecology influences internal bodies of mother.

"For quite some time now we know, that the parity of the born boys and girls can vary considerably depending on an event around, for example, at earthquakes, wars or hunger, - Alan Pejsi, the expert from university of Sheffield marks. - but nobody understands the biological reasons of these phenomena". These researches have suggested an idea it, that the harmful substances which are thrown out in atmosphere, really can to affect very dramatically a proportion between strong and the weaker sex.