首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
We inherit our DNA from our parents. DNA is shuffled, recombined and【B1】______from one generation to another. Each individual on
We inherit our DNA from our parents. DNA is shuffled, recombined and【B1】______from one generation to another. Each individual on
admin
2013-01-20
21
问题
We inherit our DNA from our parents. DNA is shuffled, recombined and【B1】______from one generation to another. Each individual on this earth received 23【B2】______of chromosomes from their parents(23 from dad and 23 from mom). Because DNA is【B3】______to a certain degree from one generation to the next, it is possible to【B4】______family lines by【B5】______specific markers.
The【B6】______of the Earth are more closely related than what it is generally thought. Today there are 6【B7】______people living on this planet. If we do some math, and we consider a generation to be about 25 years, 30 generations ago, every individual living today would have over 1 billion【B8】______ancestors. The estimated world population for the year 1250 AD was 400 million people.
This means that the number of actual ancestors for each individual is smaller than the number of possible ancestors and【B9】______.These common ancestors were able to transmit specific markers【B10】______.
The Molecular Genealogy Research Group is very interested in people with known genealogies【B11】______.Being 18 and older and having at least a four-generation pedigree chart are the only two qualifications in order to take part in this study.
【B1】
选项
答案
transmitted
解析
转载请注明原文地址:https://kaotiyun.com/show/WPu7777K
0
大学英语四级
相关试题推荐
Tell-AllGenerationLearnstoKeepThingsOfflineMinLiu,a21-year-oldliberalartsstudentattheNewSchoolinNewYork
Volumeshavebeenwrittenabouttechnology’sabilitytoconnectpeople.Butburyingone’snoseinabookhasalwaysbeensomewha
A、Theywerebeinginsultedbytheoffer.B、Theyhadabetterwayofeducatingyoungmen.C、Theyknewmoreaboutsciencethanthe
A、Alongbigrivers.B、Nearthesourcesofrivers.C、Nearthesourcesoflakes.D、Nearthesourcesoffreshwater.D事实细节题。短文中提到,历
Mostworthwhilecareersrequiresomekindofspecializedtraining.Ideally,therefore,thechoiceofan【C1】______shouldbemade
WhySmallCompaniesWillWininThisEconomyIjustheardastoryfromaclientthat’shardtobelievebuttrue.Inthe
A、She’sbrokenthepen.B、She’sreturnedthepen.C、She’slentthepentosomeone.D、Shedoesnotknowwherethepenis.D
Computersareelectronicmachinesforprocessingdata.Dataarepiecesoritemsofinformationthathavebeenproperly【C1】______
A、Comfortable.B、Funny.C、Unnatural.D、Changeable.C细节题。浏览选项可知,选项皆为形容词,可能考查细节。文中提到,大城市将它自己的生活条件强加给了city-dwellers,使他们被迫适应awholly
A、Thecouplecouldnotstopbythisevening.B、Thecouplearenowlivinginahotel.C、Thecouplecansurelymoveintomorrow.D
随机试题
对受教育权具有决定作用的是()。
下列行为中不属于侵犯他人名誉权的是()
患者双上肢呈下运动神经元性瘫,双下肢呈上运动神经元性瘫,病变平面以下各种感觉缺失,肩部及上肢可有放射性根痛,括约肌障碍,此表现损害脊髓哪个节段
产生副作用的剂量是
中国居民平衡膳食宝塔第四层是
对以划拨方式取得的土地使用权的,转让房地产时,属于下列()情形之一的,经有批准权的人民政府批准,可不办理土地使用权出让手续。
资本公积可以转增资本,盈余公积不可以转增资本。
《中华人民共和国劳动合同法》中“同工同酬”体现的原则是:
StudentlifeatAmericanuniversitiesischaoticduringthefirstweekofeachquarterorsemester.Registeringforclasses,bec
Iwasveryinterestedin______shetoldme.
最新回复
(
0
)