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In the United States raised polled calves
Genetically modified embryos were placed in animals, and resulting in five were born hornless calves.
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Geneticists from the biotech company Recombinetics (USA) managed to grow hornless from birth of calves with the help of "gene Hummel (beregost), which is introduced directly into the DNA of a horned animal.

The results of the experiment published in the journal Nature Biotechnology, reports the portal life.ru. In the US cut the cows horns, so they do not pose a threat to humans and other animals. Usually born hornless cows of some breeds, usually meat. Geneticists have found that with komastu can be associated mutation, such as the POLLED allele — loss 10 nucleotides in one of the genes located on the chromosome. Scientists were able to introduce this allele into the genome of the embryo cow: they cut the desired chromosome and removed the "extra" nucleotides and proteins of the mismatch repair system of the cell recorded the POLLED allele, the "staple" of the cut DNA.

Genetically modified embryos were placed in animals, and resulting in five were born hornless calves. And two of them need a allele was homozygous in each cell had two copies. As noted by genetics, because of this animals can be used as producers.



Translated by service "Yandex.Translation"
Источники: milknews.ru