《遗传学》第一次测验题

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1、湛江海洋大学2005——2006学年第一学期《遗传学》课测验题使用班级：生工1031。1032姓名：2005.11.141.10%SupposethattheinbreedingcoefficientofIinthefollowingpedigreeis0.25.WhatistheinbreedingcoefficientofI'scommonancostor,0?C22.10%AlinearDNAmoleculeissubjectedtosingleanddoubledigestionswithrestrictionendonucleases,and

2、thefo11owingresultsareobtained:EnzymesFragmentSizes(inkb)EcoRI2.9,4.5,7.4,8.0Hindlll3.9,6.0,12.9EcoR[andHindIII1.0,2.0,2.9,3.5,6.0,7.4Drawtherestrictionmapdefinedbythesedata・3・10%TheorderofmarkerstransferredbyfourHfrstrinstoZ7-cellsisasfollows:HfrStrainOrderofMarkersDonated1QwDM

3、TA2AXPTM►3BNCAXA4BQWDMADrawamapshowingthesitesandorientationofinsertionoftheFelementinthesefourstrains•4.10%HowisthetransferofAsimilartophageinfection?Howisitdifferent?5.13%AnanalysisoftetradsinacrossofChlamydomonasinvolvingthelocipf(paralyzedflagella)andnic(requirementforthevit

4、aminnicotinamide)gavethefollowingresults:PD=70,NPD=2,andT=28.Calculatethelinkagerelationshipbetween/zfandnic•6.13%InDrosophilathesex-linkedgenescut(ct),lozengeeye(lz),andforkedbristles(f)arethefollowingmapdistancosapart:cuttolozenge,7.7units,andlozengetoforked,29・0units.Assuming

5、thatthereisnointerference,whataretheexpectednumbersofgenotypesoutof1000femalefliesrecoveredfromthecrossctlzf/+++X65ctlzf/Y?7.15%Apopulationofmiceis“founded”bytwomice,oneD/D(normalcoatcolor)andtheotherd/d(dilutecoatcolor).Theiroffspringandsucceedingoffspringareallowedtomaterandom

6、lyforanumberofgenerationsunti1alargepopulationofmiceisestablished.Completeselectionagainstdilutemiceisnowimposed.Whatwillbethechangeingenefrequenciesaftertengenerationsundertheselectionprogram?4.7%Assumingcompletepenetranee,couldthetraitindicatedinthepedigreebelowbecausedby(indi

7、cateyesorno):b.anautosomalgenerecessiveinmalesandfemales?AnautosomalAnautosomalAnautosomalgenedominantgenedominsnlinmalesandfemales?ingenedominantinmalesandrecessiveinfemales?^infemalesandrecessiveinmales?e.AY-linkedgene?f.AnX-linkedrecessivegene?g.AnXTinkeddominantgeno?9.5%Stem

8、lengthcanvaryfrom6toinaplantspec;46cm,andapolyg