The Y-chromosome has its own characteristics that distinguish it from several other chromosomes. This structure defines the development of male characteristics in the body. It should be noted that the Y chromosome is very small and contains a minimum amount of information. Recent research published in the journal Science, reported that all the necessary genetic information of this chromosome is located just two genes. The data were confirmed in the study on laboratory mice using techniques of artificial insemination.
Research group of the University of Hawaii believes that the findings will help to delve into the problem of male infertility and to help men in finding the children. Of the cases of infertility are associated with injuries of the male chromosome.
Of course genetics is known: the XX chromosomes leads to the development of female sexual characteristics, and XY is male. "Y-chromosome in the norm can only be found in the genome of men and determines the development of masculinity," said Monica ward, head of the group.
Male mouse chromosome contains 14 genes that have dozens or hundreds of copies within one structure. Similar chromosome in humans contains up to 86 genes, but its principles of operation are identical. The study of Hawaiian scientists was to remove all genes from the Y chromosome, except for two. It turned out that this is sufficient to maintain reproductive function. Even so the modified genetic material allows the mice to produce offspring. Scientists note that this feature is implemented only in the laboratory, in the wild rudimentary sperm has no need activity. Only the technology of artificial insemination has allowed the animals to preserve reproductive function. In fact, only two genes (SRY and Eif2s3y) provide most of the functions of the Y chromosome. According to scientists, and possibly getting rid of the Y chromosome, but such a world can exist only in the pages of science fiction.