遗传学试卷-英语

1590061687703任课教师：罗培高教研室主任签字：杨先泉共页第1页共10页《EssentialsofGenetics》TestPaper(A)闭卷（√）开卷（）适用专业：植物科学与技术2003Name：StudentNumber：MajorandGrade：本试题一共四道大题，共10页，满分100分。考试时间180分钟。总分题号一二三四五六阅卷人题分203610111013核分人得分注：1.答题前，请准确、清楚地填各项，涂改及模糊不清者、试卷作废。2.试卷若有雷同以零分计。3.所有答案均填在试卷上。一选择题（每题1分，共计20分）1A____traitispassedfromanaffectedfathertoallofhisdaughtersandtononeofhissons.A.autosomaldominantB.autosomalrecessiveC.sex-linkeddominantD.sex-linkedrecessiveE.Y-linked2IntheX-Ysystem,femalesarereferredtoasA.homogametic.B.heterogametic.C.polyploids.D.homospecific.E.heterospecific.3InMendel'speas,tallisdominanttodwarfandyellowisdominanttogreen.Apure-breedingtall,yellowplantiscrossedtoapure-breedingdwarf,greenplant.TheresultingoffspringareintercrossedtogenerateanF2generation.WhichoftheF2offspringphenotypeswillbreedtrue?A.yellow,tall1590061687703任课教师：罗培高教研室主任签字：杨先泉共页第2页共10页B.yellow,dwarfC.green,tallD.green,dwarfE.noneoftheabove4Anindividualheterozygousforfivedifferentgenescanproducehowmanygeneticallydifferentgametes?A.2B.4C.8D.16E.325ConsiderthecrossAaBbxAaBb.Iftheallelesforbothgenesexhibitcompletedominance,whatphenotypicratioisexpectedintheresultingoffspring?A.1:1:1:1B.9:3:3:1C.3:6:3:1:2:1D.1:2:1:2:4:2:1:2:1E.theratioisnotpredictable6Whichsequencecorrectlydescribestheorderofeventsinthecellcycle?A.Mitosis-G1-G2-SB.S-G1-G2-MitosisC.G1-G2-S-MitosisD.G1-S-G2-MitosisE.G1-S-Mitosis-S7Arethesisterchromatidsofachromosomenecessarilyidenticalatthebeginningof1590061687703任课教师：罗培高教研室主任签字：杨先泉共页第3页共10页metaphaseofMeiosisI?A.Yes,sisterchromatidsarealwaysidenticalstructures;ifnot,theyarenotchromatidsB.Yes,onlyhomologouschromosomesdifferfromeachotherC.No,crossingovercouldgeneratedifferencesbetweensisterchromatidsD.No,thereareneversimilaritiesbetweensisterchromatidsE.Mabe,itvariesfromcelldivisiontocelldivision8Incorn,theendospermofakernelisA.haploid.B.diploid.C.triploid.D.polyploid.E.unbalanced.9AgametophyteisA.diploid.B.haploid.C.triploid.D.polyploid.E.unbalanced.10Whichevolutionaryexplanation(s)areproposedtoexplaintheexistenceofsex?A.adjustingtochangingenvironmentB.combiningbeneficialmutationsC.removingdeleteriousmutationsD.alloftheaboveE.thereisnoproposedbenefitofsexualreproduction1590061687703任课教师：罗培高教研室主任签字：杨先泉共页第4页共10页11Traitsexpressedonlyinonesex,althoughthegenesarepresentinbothsexesaresaidtobeA.sex-limited.B.sex-influenced.C.sex-conditioned.D.sex-linked.E.holandric.12Considerthreerecessivealleles(a,b,andc)inahypotheticalorganism.Assumethatafemaleheterozygousforallthreetraitsistestcrossed.Whichofthedatasetsbelowwouldindicatethatallthreegenesareindependentlyassorting?A.a+b+c+=378;abc=375;a+bc=370;ab+c=372;a+b+c=370;abc+=379;a+bc+=380;ab+c=376B.a+b+c+=940;abc=932;a+bc=282;ab+c=286;a+b+c=245;abc+=240;a+bc+=40;ab+c=35C.a+b+c+=940;abc=932;a+bc=125;ab+c=130;a+b+c=938;abc+=943;a+bc+=132;ab+c=135D.a+b+c+=300;abc=900;a+bc=300;ab+c=300;a+b+c=300;abc+=300;a+bc+=300;ab+c=2E.noneoftheabove13Considerthreerecessivealleles(a,b,andc)inahypotheticalorganism.Assumethatafemaleheterozygousforallthreetraitsistestcrossed.Whichofthedatasetsbelowwouldindicatethattwoofthegenesarelinkedandthethirdisindependentlyassorting?A.a+b+c+=378;abc=375;a+bc=370;ab+c+=372;a+b+c=370;abc+=379;a+bc+=380;ab+c=376B.a+b+c+=940;abc=932;a+bc=282;ab+c+=286;a+b+c=245;abc+=240;a+bc+=40;ab+c=35C.a+b+c+=940;abc=932;a+bc=125;ab+c+=130;a+b+c=938;abc+=943;a+bc+=132;ab+c=135D.a+b+c+=300;abc=900;a+bc=300;ab+c+=300;a+b+c=300;abc+=300;a+bc+=300;ab+c=21590061687703任课教师：罗培高教研室主任签字：杨先泉共页第5页共10页E.noneoftheabove14GiventhegenesequenceABCDEF,crossingovershouldoccurmostfrequentlybetweenA.A-B.B.A-C.C.B-D.D.A-E.E.D-F.15Thefollowingdatawereobtainedfromatransductionexperiment:A+B+C+=50;A+B+C-=75;A+B-C+=1;A+B-C-=300(Total=426).Whatisthecorrectgeneorder?A.ABCB.ACBC.BACD.CABE.cannotbeestablishedwithapartialdataset16StrainsofbacteriathathavenutritionalrequirementsarecalledA.heterotrophs.B.autotrophs.C.auxotrophs.D.prototrophs.E.conditional-lethals.17Apersonwithamissingchromosomenumber13andamissingchromosome18issaidtohaveA.trisomy.B.monosomy.C.disomy.1590061687703任课教师：罗培高教研室主任签字：杨先泉共页第6页共10页D.doublemonosomy.E.doubledisomy.18A(n)_____oftenresultswhenchromosomesfromtwodifferentspeciesdoubletoproduceaviablehybriD.A.somaticdoublingB.allopolyploidyC.autopolyploidyD.haploidyE.trisomics19Ifanucleicacidisfoundtocontain20%Aand20%T,whatcanyouconcludeaboutthepercentageofGandCbasespresent?A.20%Cand2%GB.G+C=A+TthereforeG+C=40%C.G+C=1-(A+T)thereforeG+C=60%D.G+C=80%E.cannotbedetermined20ThesequenceofthecodingstrandofDNAisthesameastheA.templatestrand.B.mRNA.C.tRNA.D.bothoftheseE.noneofthese二．名词解释（每题3分，写出中文名称1分，解释含义2分，共计36分）1haploidormonoploid1590061687703任课教师：罗培高教研室主任签字：杨先泉共页第7页共10页2heritability3heterochromatinoreuchromatin4homologouschromosomes5independentassortment6interference7transformationorconjugation8transduction9meiosisormitosis10imcompletedominanceorcodominance11synapsis12translocation三填空题（每空1分，共10分）1Geneticsstudiesbothandofinheritabletraits2isthesiteorpositionofaparticulargeneonachromosome;isanyofthealternativeformsofgivengene.3Whatist