In theory snakes in India are very even, a year from snake bites killed 50 thousand people. It is in a snake were the cause of my unwillingness to go to India, because it seemed to me that there are snakes everywhere: hiding under every stone and hanging on each branch.
Now, the first four-month trip to India not a single snake on the way I came across. It was the jungle and in various other habitats of snakes. Okay snake I have not met a loving person not to wear glasses. But the conversations with other travelers revealed the same fact: a snake in India is necessary to search for specially. Of course, some “lucky” and those who consciously sought out. But mostly snakes nobody saw.
The fact is that snakes don’t eat people, and catch mainly mice and rats, so the easiest way to come across a poisonous snake in the rice or barley field. It is therefore logical that one of those 50 thousand people that die every year from snakebites in India, almost all farmers, as the agricultural activity attracts creeping reptiles, but Indian doctors. which can inject anti-typhoid serum in the field about a remote village difficult to find, here and dying peasants. If the snake the snake will bite You and it will be given proper medical treatment, chances of survival are very high. The question is who will bite.
Assessment of the risk of being Continue reading
Found a gene that determines, will become a gamete sperm or egg
Japanese genetics found in the DNA of fish unusual gene that determines it, will the sex cell sperm or egg, and changed his work so that in the ovaries of female fish began to form spermatozoa and in the testes of males of the egg, according to a paper published in the journal Science .
“We knew that gametes can turn into sperm and ovum, but no one has suggested that these cells in the vertebrate animals have a special gene”switch” that determines their fate – to become a sperm or egg. Our results indicate that the cell is able to go all the way. This is a very important and unexpected discovery” – quoted by RIA “Novosti” scientist Minoru Tanaka from the Institute of General biology of Japan in the city of Okazaki.
Tanaka and his colleagues made this unusual discovery, watching the development of germ cells in testes and ovaries rice fish-oriii (Oryzias latipes). During maturation of sperm and egg cells, researchers monitored changes in the level of activity of different genes, trying to find the differences between future male and female reproductive cells.
The attention of scientists was attracted to gene foxl3 – “archival copy” of the gene foxl2, which is responsible for growth of eggs and maintaining Continue reading