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
55
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.
【B10】
选项
答案
that are present in our DNA and that we share with others today.
解析
转载请注明原文地址:https://kaotiyun.com/show/hPu7777K
0
大学英语四级
相关试题推荐
PresidentRichardNixonusedtosaythatthefirstcivilrightofeveryAmericanistherighttobefreefromdomesticviolence.
Americansareproudoftheirvarietyandindividuality,yettheyloveandrespectfewthingsmorethanauniform,whetheritis
A、Ataparty.B、Atschool.C、Inafriend’shouse.D、Ataclub.B选项表明,本题考查地点。对话中男士对女士说他们好像在哪儿见过,女士说Wemetoncampuslastweek,即上次
Tell-AllGenerationLearnstoKeepThingsOfflineMinLiu,a21-year-oldliberalartsstudentattheNewSchoolinNewYork
Forthispart,youareallowed30minutestowriteashortessayonthetopicofOnBlind-dateShow.Youshouldwriteatleast1
Thepointoffactoryfarmingischeapmeat,madepossiblebyconfininglargenumbersofanimalsinsmallspaces.Perhapsthegre
Forthispart,youareallowed30minutestowriteashortessayentitledTheImportanceofPublicServiceAdvertising.Youshou
A、HerIDcardandpassport.B、Herpersonalreferences.C、Hersocialsecuritynumber.D、Hercoverletter.B选项中的HerIDcard,Herpe
RaisingPets1.有些人喜欢养宠物,理由是……2.有些人反对养宠物,理由是……3.我的观点
A、Thetwoboyswereaccusedofkillingachildabouttwoyearsold.B、Thetwoboyswereaccusedoflying.C、Thetwoboyswereac
随机试题
经国家统计局审定,某省2016年全年地方一般公共预算收入3389.4亿元,其中税收收入2329.2亿元,增长5.0%。一般公共预算支出8011.9亿元,增长9.8%。年末金融机构人民币各项存款余额65638.4亿元,比上年年末增长10.9%。其
诗中用以强化爱国激情的一个修辞手法是
A.髓质型B.蕈伞型C.溃疡型D.缩窄型E.菜花型出现阻塞程度较轻的食管癌是
《拆迁条例》规定,拆除代管房屋,可以不经过公正机关办理公正。
背景A公司具有机电工程建设总承包资质,经营范围包括可代理业主进行全部项目建设管理工作,直至竣工验收投入正式生产或使用。某建设单位拟扩建一民营化学试剂厂,因购入国内尚未采用的新工艺而扩建规模较大的厂房和装置,以提高产能和产品质量,由于引进的仅是工艺
对于税费的缴纳及申报期限,以下表述错误的是;
金华八咏楼原名玄畅楼,后改名元畅楼。因李清照曾写下8首诗赞美此楼,改为八咏楼。()
我国政府通过在国外设立“孔子学堂”,让更多的外国民众学习汉语,了解中国,喜欢中国。这说明教育可以()。
Whereisthisconversationprobablytakingplace?
Whentheabovecommoditiesareavailableforexport,pleaseletusknowbytelex.
最新回复
(
0
)