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ID:12035470
大小:26.47 KB
页数:28页
时间:2018-07-15
《遗传学选择题(genetic selection)》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、遗传学选择题(Geneticselection)1.hereditarydiseasesreferspecificallyto(c)AcongenitaldiseasesBfamilialdiseasesDiseasescausedbychangesinCgeneticmaterialDnontreatablediseasesThe2.DOWNsyndromeis(b)AmonogenicdisordersBpolygenicinheritancediseaseCchromosomehereditarydiseaseDmitochondrialgeneticdiseaseWhenthe3
2、geneisexpressed,thebasicflowdirectionofgeneticinformationis(d)A.RNADNAproteinB.DNARNAproteinCtRNAmRNAproteinDDNAmRNAprotein4thegeneticcodeinthegeneticcodeisrepresentedbythebasethreeconjoined5`(b)inthefollowingmoleculardirection:3`ADNABmRNACDNADtRNA5inthestudyofstructuralgenomics,thegenomemapforid
3、entifyingthelocation,structureandfunctionofallgenesinthehumangenomeis(b)AfunctiondiagramBtranscriptCphysicalmapDsequencediagramIntheprocessof6DNAreplication,thesynthesismodeofthechainis3`(b)whentheparentchainis5`ContinuoussynthesisofsubchainsfromA3`to5`B5`,3`synthesisofseveralOkazakifragments,and
4、thenbyDNAligasetheseOkazakifragmentstoformacompletechain.ContinuoussynthesisofsubchainsfromC5`to3`DiscontinuoussyntheticchainsofD,5`and3`7aftermutationpoint,allcodonshiftmutationswere(a)AframeshiftmutationBbumpDeletionofCDconversionThestructuralaberrationofchromosome8belongsto(d)ArepeatBconversio
5、nCbumpDfragmentmutation9thegenemutationwithoutaminoacidcodingwas(a)SynonymousmutationinABmissensemutationNonsensemutationinCDterminatorcodonmutationThesubstitutionmutationbetween10basepairsis(d)AframeshiftmutationBdynamicmutationCfragmentmutationDconversion11.pedigreemappingbeginswiththefirstmemb
6、erofthefamilytovisitthepatient,andthisindividualiscalled(d)AinvolvementBcarriersCpatientsDproband12intheXlinkagedominantinheritance,thegenotypeofpatientswasthemost(b)AXAXABXAXaCXaXaDYaYa13ofnormalcouples,evenhadtwochildrenwithphenylketonuria,theprobabilityoftheirchildrenisthenormalfertilityphenot
7、ype(d)A0B100%C50.5%D75%14pairsofcongenitaldeafmutecouple,havetwonormalchildren,because(d)IncompletedominanceofABgeneticimprintingCgeneticheterogeneityDirregulardominance15apairofallelesintheheterozygousstate,theroleoft
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