The person with superstrong bitter gustatory bud is apter to

The person with superstrong bitter gustatory bud is apter to survive
It is reported ' Reporter Hu DeRong) The seminar of the key laboratory of Ministry of Education of modern anthropology of Fudan University has hit counterevidence from the gene really one exists in history " The legendary god of farming tastes one hundred grasses " Era. In this era, the people with superstrong bitter gustatory bud have more chances to survive. Thesis of this research was issued on the latest internationally famous academic publication " human biology " magazine a few days ago.

According to the introduction of the persons in charge of this seminar, modern anthropology key laboratory person in charge associate professor Li Hui, to have sour sweet bitter hot 5 kind fresh gustatory bud in the oral cavity people, and bitter gustatory bud most developed gustatory bud under oral cavity. The bitter tasting gene is that the gene of sense of taste hits the most kinds too, reach several dozen kinds, one the intersection of acerbity and genetic the intersection of TAS2R16 and bitter tasting receptor of code, specially until common pyrrole mutter glucoside type toxin of glucose in the plant, it is very difficult for the person not strong of this genetic function to taste the toxin.

It is reported, after the gene receives the natural selection, will leave the trace in the structure of the genome. Chosen eliminating, surging type of the weak type of the gene to be kept, the gene of neighbour near the surging type of gene the natural selection, will be kept in conjunction with only a few types too, this is named effect of getting a lift.

The seminar finds, the enhancement function variant of Chinese philtrum acerbity genetic TAS2R16 has longer getting a lift in the sector, should receive the natural selection within 10,000 years, but not found this phenomenon among other ethnic groups. Under study for action, this seminar has measured the sample of most crowds in the world, but found very strong effect of getting a lift of the bitter tasting gene in China area. About five six a thousand years ago, large-scale natural screening has happened in our country, a lot of people can't taste the ubiquitous acerbity in the poisonous plant, has been eliminated. And China area is in middle period of the Neolithic Age five or six thousand years ago. Before this, though already there is agriculture, agriculture is not to offer the main source of the grain; But after this, agriculture becomes people's mode of production of main grain. So a very great social change must happen in this period. During this change, population swells fast, the mankind must go out of the forest, look for the new grain source. At this moment, face various plants, the mankind is unable to take food according to experience, must try various food and find the new route to survive. While the mankind is forced to try various plants in order to find out the type that can be eaten, in the face of the poisonous plant, recognizing the person with worse ability will get killed because of eating the poisonous plant by mistake, can experience acerbity while recognizing the person with strong ability, thus spit the poisonous plant out and survive. This is the possible reason why the bitter tasting gene receives the natural selection.

" the legendary god of farming tastes one hundred grasses " Having recognized out various cereal crops and medical herbs, therefore agriculture and Chinese medicine rise on the earth of China. Researchers point out, in fact, " legendary god of farming " who can taste the bitter tasting toxin Large quantities of. This batch have the intersection of TAS2R16 and gene strengthen type the people has tried various plants bravely first, have left the most valuable experience for descendant.



The person with superstrong bitter gustatory bud is apter to survive