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10 facts about genetics and mutations
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1. The genetic correction of a person may become a reality of the near future. In December 2008 it was announced that London is expected birth of the world's first genetically modified child. In January 2009 it was announced the successful birth of a girl.
2. The optimistic or pessimistic view of the world each person is genetically programmed. According to research by scientists from the University of Michigan, it is determined by the concentration of neuropeptide Y in the brain: the reduced concentration of forces to perceive the surrounding pessimistic and depressing.
3. The number of cheetahs in the world is constantly shrinking. This is due primarily to the very low genetic diversity among their animals. If the majority of the studied animal genetics genes identical by about 80%, cheetahs, this figure reaches 99%. This unique identity is due to the fact that during the last ice age population of cheetahs went through so-called "bottleneck" - perhaps all the living cheetahs are descended from just one pair. The consequence of incest became increased susceptibility to the slightest changes in the type of environment and viruses.
4. Born in 1993, American Girl Brooke Greenberg in their physical and mental parameters is still an infant. Her height - 76 cm, weight - 7 kg teeth - milk. Assays physicians revealed that its genes responsible for aging, no mutations. However, scientists do not lose hope with the help of the new studies of the girl closer to understanding the causes of aging people.
5. For the people who have died or lost their opportunity to leave offspring as a result of their own stupidity, Darwin established a special prize. Her hand as a reward for the service - the withdrawal of its genes from the human gene pool. One of the classic stories like this happened in an Egyptian village. 18-year-old farmer reached into the well to get the fallen chick. Since he could not swim, he began to sink, and to help him in the well began jumping his relatives and friends. Total 6 people drowned and chicken eventually survived.
6. In 2006, Taiwanese scientists have deduced green glowing piglets. For this purpose, the DNA chain embryo introduced green fluorescent protein gene borrowed from a fluorescent jellyfish. Lit from pigs not only the skin but also the internal organs. The main objective of this experiment - the possibility of visual observation of the development of tissues when stem cell transplantation.
7. In 1961 was a new breed of cats - Scottish Fold. The cause of the folded forward and down the ear was a genetic mutation. Mating cats of this breed cause disorders of the musculoskeletal system in the offspring, so to get the new fold kittens need to cross Fold cats with normal individuals.
8. The blue color of the eyes - is the result of a mutation in the gene HERC2, because of which the carriers of this gene is reduced production of melanin in the iris. There was this mutation about 6-10 thousand. Years ago in the Middle East, so that all people with blue eyes are considered relatives.
9. Many reptile sex growing embryo in the egg is not determined by the chromosomes of parents, and the ambient temperature.
10. The two-headed kitten born in November 2008 in Meydvele (USA). Despite the outward ugliness he was completely healthy. He behaved just like any other kittens - mewed, ran and ate. Deformation of his head is the result of genetic errors that occurred at an early stage of embryo development.
A selection was: Lori Destroy
via factroom.ru
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