OREANDA-NEWS Japanese biologists have developed a technology for choosing the sex of an animal in artificial insemination, the journal PLOS Biology writes. They managed to act on the cells so that the activity showed the type of sperm necessary for specialists.

Biologists have obtained a chemical substance that reduces the motor activity of sperm with X chromosomes, but does not affect their viability and fertility.

This discovery made it possible for scientists to select fast or slow spermatozoa and combine X- and Y-chromosomes in the embryo. Corresponding tests have already been successfully carried out on mice.