首页
登录
职称英语
"Successful cloning of an increasing number of species confirms the general impr
"Successful cloning of an increasing number of species confirms the general impr
游客
2023-10-13
84
管理
问题
"Successful cloning of an increasing number of species confirms the general impression that it would be possible to clone any mammalian species, including humans," said Ian Wilmut, a reproductive biologist at the University of Edinburgh who produced the first cloned mammal, Dolly the sheep, from an adult cell nearly a decade ago. Researchers have since cloned cats, goats, cows, mice, pigs, rabbits, horses, deer, mules and gaur, a large wild ox of Southeast Asia. So far, efforts to clone a monkey or another primate with the same techniques have failed. Uncertainties about the health and life span of cloned animals persist: Dolly died prematurely in 2003 after developing cancer and arthritis.
选项
答案
爱丁堡大学生殖生物学家伊恩·维尔莫特称:“越来越多的物种被成功克隆使人们确信:所有哺乳动物,包括人类本身,都是可能被克隆的。”维尔莫特是第一个克隆哺乳动物的科学家,大约10年前他成功利用成体细胞克隆了绵羊多莉。此后研究人员相继克隆了猫、山羊、牛、老鼠、猪、免予、马、鹿、骡及白肢野牛(东南亚地区一种大野牛)。但迄今为止,用同样方法克隆猴子或其他灵长类动物的尝试均告失败。克隆动物的健康状况及寿命也仍然存在不确定性:绵羊多莉2003年就因患癌症及关节炎夭亡。
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3094341.html
相关试题推荐
Thenumbersontherightareformedfromthenumbersontheleftusingthesame
Fillinthemissingnumbersinthissequence:15873×7=11111115873×14=222222
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
随机试题
[originaltext]Thecommitteecanmakeitsdecisionafortnighttodayonlyifit
TheamountoffloatingplastictrappedinanorthAtlanticcurrentsystemha
测绘生产经费支出是指由财政资金安排的,在生产组织与实施过程中发生的各项费用支出,
如图所示,△ABC是底角为30°的等腰三角形,其内的矩形DEFG是由两个边长为1
某公共建筑内设置的水喷雾灭火系统实际安装了500只喷头,系统安装的喷头均为同一种
工作记忆中,为了保持信息,运用内部语言在大脑中重现学习材料或刺激,以便将注意力维
在商业银行的外汇交易中,直接标价法是以一定单位的本国货币为标准来计算应付出多少单
在某公司破产案件中,债权人会议经出席会议的有表决权的债权人过半数通过,并且其所代
2020年5月,A烟草批发企业向B卷烟零售店销售甲类卷烟200标准条,取得不含增
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
最新回复
(
0
)