久久亚洲国产成人影院-久久亚洲国产的中文-久久亚洲国产高清-久久亚洲国产精品-亚洲图片偷拍自拍-亚洲图色视频

 
 
 

Genome shows humans more gorilla-like than thought

2012-03-26 15:59

 

Genome shows humans more gorilla-like than thought

Humans and chimps separated from a common ancestor six million years ago, while gorillas split off from that common ancestor four million years before that, confirms a new study, published in Nature.

Sixty scientists worked over five years to sequence the genome of a single female lowland gorilla. Their study published in the British journal Nature, confirms that humans and chimps separated from a common ancestor six million years ago, gorillas split off from that common ancestor four million years before that.

Lead author Aylwyn Scally, is with the Trust Genome Campus of the Wellcome Trust Sanger Institute in England, he says even with that evolutionary distance, humans and gorillas have a lot more in common, genetically, than previously thought.

"The passage of ancestry across the three genomes changes from position to position," Scally says. "Although most of the human genome is indeed closer to chimpanzee on average, there's a sizable minority, 15 percent is in fact closer to gorilla. And another 15 percent is where chimpanzee and gorilla are closest."

Ninety-eight percent of human and gorilla genes are identical; humans and chimps share 99 percent of their DNA. Co-author Chris Tyler-Smith, also with the Wellcome Trust Sanger Institute, says it's those relatively few genes that differ between the species that are of special interest.

For example, the study finds that a single gorilla gene associated with enhanced production of keratin - a protein that toughens the apes' fingernails, skin and especially their knuckle pads - is absent from the human genome.

Tyler-Smith says a group of genes, associated with hearing, tells another story.

"It's been known for some time that hearing genes in humans have shown accelerated evolution," he says, "but what we could see by sequencing the gorilla genome was that this acceleration goes back millions of years. So the implication of that is that this is not because of human language ability, it must be for some broader role that these play."

Tyler-Smith says the gorilla genome sequencing also identified several genes that in humans cause disease , but in gorillas do not. One gene leads to a form of human dementia, a second is associated with heart failure in people.

"If we could understand more about why those variants are so harmful in humans, but not in gorillas, that would have important or useful medical implications." Tyler-Smith says he intends to explore the ancestral family tree further, to learn what happened as humans and apes evolved on their separate paths.

He says the gorilla sequence is a template that will help to explain many of those evolutionary mysteries.

chimps: (非洲的)黑猩猩

gorilla: 大猩猩

keratin: 角蛋白;角素,角質(zhì)

knuckle pads: 指節(jié)墊

Related Stories:

Animal safety on movie sets still a concern

Chimps saved from Ebola

Oh, to be young (and a gorilla) in London

Four more people who are making a difference

(來(lái)源:VOA 編輯:Rosy)

 
中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津版權(quán)說(shuō)明:凡注明來(lái)源為“中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津:XXX(署名)”的原創(chuàng)作品,除與中國(guó)日?qǐng)?bào)網(wǎng)簽署英語(yǔ)點(diǎn)津內(nèi)容授權(quán)協(xié)議的網(wǎng)站外,其他任何網(wǎng)站或單位未經(jīng)允許不得非法盜鏈、轉(zhuǎn)載和使用,違者必究。如需使用,請(qǐng)與010-84883561聯(lián)系;凡本網(wǎng)注明“來(lái)源:XXX(非英語(yǔ)點(diǎn)津)”的作品,均轉(zhuǎn)載自其它媒體,目的在于傳播更多信息,其他媒體如需轉(zhuǎn)載,請(qǐng)與稿件來(lái)源方聯(lián)系,如產(chǎn)生任何問(wèn)題與本網(wǎng)無(wú)關(guān);本網(wǎng)所發(fā)布的歌曲、電影片段,版權(quán)歸原作者所有,僅供學(xué)習(xí)與研究,如果侵權(quán),請(qǐng)?zhí)峁┌鏅?quán)證明,以便盡快刪除。

中國(guó)日?qǐng)?bào)網(wǎng)雙語(yǔ)新聞

掃描左側(cè)二維碼

添加Chinadaily_Mobile
你想看的我們這兒都有!

中國(guó)日?qǐng)?bào)雙語(yǔ)手機(jī)報(bào)

點(diǎn)擊左側(cè)圖標(biāo)查看訂閱方式

中國(guó)首份雙語(yǔ)手機(jī)報(bào)
學(xué)英語(yǔ)看資訊一個(gè)都不能少!

關(guān)注和訂閱

本文相關(guān)閱讀
人氣排行
搜熱詞
 
 
精華欄目
 

閱讀

詞匯

視聽

翻譯

口語(yǔ)

合作

 

關(guān)于我們 | 聯(lián)系方式 | 招聘信息

Copyright by chinadaily.com.cn. All rights reserved. None of this material may be used for any commercial or public use. Reproduction in whole or in part without permission is prohibited. 版權(quán)聲明:本網(wǎng)站所刊登的中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津內(nèi)容,版權(quán)屬中國(guó)日?qǐng)?bào)網(wǎng)所有,未經(jīng)協(xié)議授權(quán),禁止下載使用。 歡迎愿意與本網(wǎng)站合作的單位或個(gè)人與我們聯(lián)系。

電話:8610-84883645

傳真:8610-84883500

Email: [email protected]

主站蜘蛛池模板: 久久国产免费观看精品3 | 亚洲成a人片在线观 | 国产一区二区三区精品视频 | 国产精品拍自在线观看 | 欧美日韩一区二区三区视频播 | 国产在线观看网址在线视频 | 亚洲最新网站 | 国产精品一区二区三区高清在线 | 国产三级a| 一级高清毛片免费a级高清毛片 | 久久久一本精品99久久精品66 | 欧美啊啊啊 | 亚洲视屏在线观看 | 久久精品视频一区 | 国产成人精品女人不卡在线 | 国产在线视频自拍 | 国产在线乱子伦一区二区 | 一级做a爰片性色毛片视频图片 | 欧美日本亚洲国产一区二区 | 一本色道久久99一综合 | 成人在线综合 | 国产人人插 | 午夜视频一区二区 | 国产精品亚洲第一区二区三区 | 亚洲超大尺度激情啪啪人体 | 国产成人禁片免费观看 | 中文字幕精品一区二区绿巨人 | 日韩精品中文字幕在线 | 中国人免费观看高清在线观看二区 | 亚洲精品第一第二区 | 久久狠狠一本精品综合网 | 精品久久久久不卡无毒 | 亚洲国产精品第一区二区 | 日本高清无吗免费播放 | 欧美日韩国产58香蕉在线视频 | 97视频免费播放观看在线视频 | 国产欧美日韩精品一区二 | 日本人一级毛片视频 | 国产在线一区在线视频 | 欧美一线免费http | 男女性高爱潮免费的国产 |