We were taught at school that the mechanisms of flooding should be simple. The best-seen spermatozoon fills an ovum. New findings seem that the ovum is not a passive "lady", but an active participant in ferrying.
The race is over: the egg itself chooses the right sperm, and not vice versa / istockphoto.com
Vibagliva lady
Scientists at the Pacific Northwest Research Institute (USA) have found out that the egg cell is qualified or the spermatozoa are rejected. Everything seems to be on the same level, so the process is richly folded, we thought.Previously, it was important that the observance of Mendel's law was observed. Vіdpovіdno up to the new, rozdnennja vіdbuvaєtsya vіpadkovy rank. If a skin father carries two copies of his genes, the genes are divided after gametes, and the skin gamete takes only one copy of the gene.
Vcheni conducted two experiments, yakі pointed to a new theory. In one experiment, female mice carried the gene for ovarian cancer, males were healthy. Zaplіdnennya vіdpovіdalo Mendel's law. In another experiment, males carried the mutant gene, while females did not. From here Mendel's law was not confirmed. Accordingly, 75% of the offspring had a small amount of the mutation, and only 27% had a few, so that the egg cell "selected" healthy spermatozoa.
How do you choose to choose?
What matters is that one of the leading roles is played by a moleculefolic acid. Their metabolism is found in eggs and spermatozoa. The stinks can be attracted. Also, there is another version of the heavy one, for sure, while the spermatozoa are in the body of a woman, the egg cell rozpodil his cells in such a rank, so that the genius ideally passed the spermatozoon.
What about other spermatozoa?
Why don't others play the same role in the flood and overcome only one? Other spermatozoa circulate the ovum and assist in the development of the mucosa. Ale "vsmoktuє" there is less than one "extortion".
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