DNA可用来预测头发的颜色
文章来源:未知 文章作者:enread 发布时间:2011-01-04 03:17 字体: [ ]  进入论坛
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The hair color of an unknown perpetrator(犯罪者) who has committed a crime will soon no longer be a secret for forensic1(法院的) investigators2. Erasmus MC scientists, in collaboration3 with their Polish colleagues, have discovered that DNA4 can be used to predict people's probable hair color. Their findings will be published today in the Springer journal Human Genetics. The research findings demonstrate that on the basis of DNA information it is possible to determine with an accuracy of more than 90 percent whether a person has red hair, with a similarly high accuracy whether a person has black hair, and with an accuracy of more than 80 percent whether a person's hair color is blond or brown. This new DNA approach even allows differentiating5(区别) hair colors that are similar, for example, between red and reddish blond, or between blond and dark blond hair. The necessary DNA can be taken from blood, sperm6, saliva7(唾液) or other biological materials relevant in forensic case work.

Prof. Manfred Kayser, Chair of the Department of Forensic Molecular8 Biology at Erasmus MC, who led the study, said, "That we are now making it possible to predict different hair colors from DNA represents a major breakthrough because, so far, only red hair color, which is rare, could be estimated from DNA. For our research we made use of the DNA and hair color information of hundreds of Europeans and investigated genes9 previously10 known to influence the differences in hair color. We identified 13 'DNA markers' from 11 genes that are informative11 to predict a person's hair color."

Prof. Ate Kloosterman of the Department of Human Biological Traces at the Netherlands Forensic Institute (NFI) said: "This research lays the scientific basis for the development of a DNA test for hair color prediction. A validated12(经过验证的) DNA test system for hair color shall become available for forensic research in the not too distant future. These researchers have previously published articles on predicting eye color and estimating age on the basis of DNA material. This type of objective information can be used to refine the description of an unknown but wanted person. This new development results in an important expansion of the future DNA toolkit(工具包) used by forensic investigators to track down unknown offenders13."

The current study was directed at the predictability of the color of the hair on the head. Further research would be necessary to predict the color of body hair.



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1 forensic 96zyv     
adj.法庭的,雄辩的
参考例句:
  • The report included his interpretation of the forensic evidence.该报告包括他对法庭证据的诠释。
  • The judge concluded the proceeding on 10:30 Am after one hour of forensic debate.经过近一个小时的法庭辩论后,法官于10时30分宣布休庭。
2 investigators e970f9140785518a87fc81641b7c89f7     
n.调查者,审查者( investigator的名词复数 )
参考例句:
  • This memo could be the smoking gun that investigators have been looking for. 这份备忘录可能是调查人员一直在寻找的证据。
  • The team consisted of six investigators and two secretaries. 这个团队由六个调查人员和两个秘书组成。 来自《简明英汉词典》
3 collaboration bW7yD     
n.合作,协作;勾结
参考例句:
  • The two companies are working in close collaboration each other.这两家公司密切合作。
  • He was shot for collaboration with the enemy.他因通敌而被枪毙了。
4 DNA 4u3z1l     
(缩)deoxyribonucleic acid 脱氧核糖核酸
参考例句:
  • DNA is stored in the nucleus of a cell.脱氧核糖核酸储存于细胞的细胞核里。
  • Gene mutations are alterations in the DNA code.基因突变是指DNA密码的改变。
5 differentiating d3096d547199751d1b8d0cb8d931d402     
[计] 微分的
参考例句:
  • They succeed in differentiating the most commodity-like products. 在最通用的日用产品方面,它们也能独树一帜标新立异。
  • The simplest and most effective method of differentiating areas is to use different colours. 区别面状要素最简单而又行之有效的办法,是使用不同的颜色。
6 sperm jFOzO     
n.精子,精液
参考例句:
  • Only one sperm fertilises an egg.只有一个精子使卵子受精。
  • In human reproduction,one female egg is usually fertilized by one sperm.在人体生殖过程中,一个精子使一个卵子受精。
7 saliva 6Cdz0     
n.唾液,口水
参考例句:
  • He wiped a dribble of saliva from his chin.他擦掉了下巴上的几滴口水。
  • Saliva dribbled from the baby's mouth.唾液从婴儿的嘴里流了出来。
8 molecular mE9xh     
adj.分子的;克分子的
参考例句:
  • The research will provide direct insight into molecular mechanisms.这项研究将使人能够直接地了解分子的机理。
  • For the pressure to become zero, molecular bombardment must cease.当压强趋近于零时,分子的碰撞就停止了。
9 genes 01914f8eac35d7e14afa065217edd8c0     
n.基因( gene的名词复数 )
参考例句:
  • You have good genes from your parents, so you should live a long time. 你从父母那儿获得优良的基因,所以能够活得很长。 来自《简明英汉词典》
  • Differences will help to reveal the functions of the genes. 它们间的差异将会帮助我们揭开基因多种功能。 来自英汉非文学 - 生命科学 - 生物技术的世纪
10 previously bkzzzC     
adv.以前,先前(地)
参考例句:
  • The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
  • Let me digress for a moment and explain what had happened previously.让我岔开一会儿,解释原先发生了什么。
11 informative 6QczZ     
adj.提供资料的,增进知识的
参考例句:
  • The adverts are not very informative.这些广告并没有包含太多有用信息。
  • This intriguing book is both thoughtful and informative.这本引人入胜的书既有思想性又富知识性。
12 validated c9e825f4641cd3bec0ba01a0c2d67755     
v.证实( validate的过去式和过去分词 );确证;使生效;使有法律效力
参考例句:
  • Time validated our suspicion. 时间证实了我们的怀疑。 来自《现代英汉综合大词典》
  • The decade of history since 1927 had richly validated their thesis. 1927年以来的十年的历史,充分证明了他们的论点。 来自辞典例句
13 offenders dee5aee0bcfb96f370137cdbb4b5cc8d     
n.冒犯者( offender的名词复数 );犯规者;罪犯;妨害…的人(或事物)
参考例句:
  • Long prison sentences can be a very effective deterrent for offenders. 判处长期徒刑可对违法者起到强有力的威慑作用。
  • Purposeful work is an important part of the regime for young offenders. 使从事有意义的劳动是管理少年犯的重要方法。
TAG标签: person hair color DNA
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