遗传学选择题（genetic selection）

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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