Welcome to china

Cao cao and trigger a tomb of anyang storm.

Fudan university experts respond five big dispute DNA testing results are expected within two months

2009 on December 27, henan anyang announced the discovery of the tomb for grave ulterly changed, but not broken bones and in the increasingly fierce. While fans of the bureau of false tombs in 2010, January 26, fudan university history department and the key laboratory of contemporary anthropology, “announced to the CaoXing solicitation in Y chromosome detection” male with DNA technology, “cao grave” authenticity. News, parties to question at fudan university, the group was pushed two-decade-long opinion.

Our reporter interviewed many of the two experts, professor of history, fudan university, vice President of Chinese dynasties HanSheng and fudan university college of life science at fudan university professor, the key laboratory of contemporary anthropology project principal li hui. So, five big question facing more, the truth of the matter is what?

And to our newspaper reporter li hui also revealed that DNA samples collected on July 15, he will. Later, will focus. He revealed that results in two months is expected to be announced.

A: the DNA can detect dispute cao?

Response: family has unique genetic code

“The name of cao, fudan university shout you go check DNA!” – netizens so teasing way. For most people, the group of the direct question is whether a DNA test, by spectrum?

Li hui, explains the scientific principles. In simple terms, the male with paternal forebears is the same genetic code, every family can find a unique single nucleotide polymorphisms (SNPS). In the process of human reproduction, Y chromosome is always handed on from father to son, can complete offspring inheriting the Y chromosome backbone father generation and half-blood influence. In the author’s father generation Y dyeing process, changes accumulate experience slowly, the formation of the two kinds of mutation is one of SNPS individual differences.

However, the rate is extremely low SNPS mutations, every times, can only happen once nestin permanently in the offspring. Research shows that every man, born a position on a chromosome mutation probability happened about SNPS one thousand, in the same point mutations, the probability of 0.9 quadrillion for one, since ancient times, the human population is the probability equals to zero. Therefore, if detection enough CaoXing man DNA, researchers can find the unique SNPS cao family should then and cao “grave” bone unearthed from the Y chromosome comparative DNA, can get “is either cao cao” or not, the conclusion. For detecting method, actually very simple, need 2 ml blood can extract.

Dispute: ancient DNA can also measure?

Response: “the beauty of loulan” is demonstrated

Even a DNA test is likely, but “cao” remains a 2000 years, and how to test? Li hui, laboratory, very advanced ancient DNA, but in fact, the enterporise technique in the early 1990s is mature, international has been able to 20,000 years bone DNA analysis. In 2007, the group had a li hui has successfully extracted from the neolithic age remains the Y chromosome. He told reporters, no need to worry about, “cao” remains under the modern DNA pollution, no need to worry about it, because not all broken bones. “if we get this word of surface must be cleaned, the surface of DNA, and then in a concealed location, to drill a hole in the DNA analysis has been broken bones. Unless it into powder, or were completely destroyed after inoculated thirds of DNA from inside, but look at photos of this phenomenon” doesn’t seem.

So, if the son of cao cao zhi’s directly with the bone to make contrast test not even able to appraisal parent-child identity, why a big bend around? In this view, li hui, said: “this is wrong. The ancient and modern DNA testing is completely different, can use the DNA of modern medical mode to detect, even got the bones of cao zhi’s, nor for identification of bone is true.” In fact, 1958 shandong unearthed bones, cao zhi’s whereabouts.

Actually, things are not what DNA archaeology. Early in 1980, hunan medical university from the woman corpse of han miu extracted DNA and RNA. From 2003 to 2005, archaeologists excavated in LuoBuBo loulan in the graveyard, including dozens of body discovered the beauty of loulan “, “from the physical characteristics, she is the typical Scandinavian race. However, the DNA found, it is typical Oriental genetic characteristics, the beauty of loulan “eastern descent.

Dispute: a hype a show?

Response: a DNA test should also archaeological auxiliary

Today, the subject and henan in anyang through telephone, cao “bones DNA testing” substantial progress is not matters. Li hui, said this because it hasn’t this need, “the first step in modern, finished in May with cao related to other ancient DNA analysis, some successful test results, we’ll consider contact with henan relics departments, we must have a sample after, can do to a precious bones testing” cao.

So, many users even experts to cannon said: “just a game show” hype. Actually, li hui, who confessed to DNA testing is a kind of auxiliary means, it only proves “CaoXing whether cao” bones man, results of the need and historical and archeological Angle. Each And HanSheng think, if a DNA test results show that it is the tombs, and cao scale and the age of many bones, archaeological and historical evidence, “then in