Ls15 Ucla Phelan Final Exam Questions With 100% Correct And Verified Answers 2025

Ls15 Ucla Phelan Final Exam
Questions With 100% Correct And
Verified Answers 2025
dawniashworthiandilyndaimannimurdersi-
iCORRECTiANSWERS-

oneimaniconfessedionlyitoitheisecondimurder
alecijeffreysiinvestigatingihowitoitestiforiDNAi-i1985
foundithatiperpetratorsiofitheicrimeiwereitheisame,ibutiitiwa
sn'titheiguyiwhoiconfessed
gotivoluntaryibloodiandisalivaisamplesi
colinipitchfork

fingerprintiforicrimeiidentificationi-iCORRECTiANSWERS-
hasibeeniiniuseiforihundredsiofiyears
goodiforipropertyionesi
turniintoinumericalicodeibasedionitheseiparts

whyiareiweiinterestediinidnaifingerprinting?i-
iCORRECTiANSWERS-

realifingerprintsinotileftibehindiinimanyicrimesi
theyiareiessentiallyiunique

realifingerprintsiarei-iCORRECTiANSWERS-entirelyiunique

dnaifingerprintingiusesi-iCORRECTiANSWERS-
solveiunsolvableicrimesi
resolveipaternityiissuesi
caniproveiinnocenceiofipeopleiunjustlyiconvictedi
immigration

dnaiisi-iCORRECTiANSWERS-
ailongisequenceiofilettersithaticarryitheiinfoiofihowitoibuildi
moleculesiforitheibody


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,AioriT,iGioriCi-iCORRECTiANSWERS-matchiup

howimuchi"spelling"idifferenceiisithereibetweeniindividuals?
i-iCORRECTiANSWERS-99.9%iofiitiexactlyitheisame

differentienough:i3iMidiffibaseipairs

oniaverage,iindividifferiinitheiridnaisequenceiati-
iCORRECTiANSWERS-

0.1%iofitheiribases:i3Midifferencesioutiofi3Bibaseipairs

bloodi-iCORRECTiANSWERS-
caniisolateicellsithaticameifromiperpetrators,igetitoirepeatin
giparts,iindicationi-irandomipopulationitoicompareito

shortitandemirepeatsi(STRs)i-iCORRECTiANSWERS-
repeatingiunits,iusuallyi4-5inucleotidesilong
diffiallelesimayirepeatidifferentiamountiofitimesi
calliitiailocus:ilocationionichromosomei
noncodingi-
idoesn'ticodeiforianyiproduct,iprotein,ibuilt,ietc.i"junkidna"



nucleotidesi-iCORRECTiANSWERS-A,iT,iC,iG

supposedithereiarei10iallelesiforistri1,ieachiwithitheisameifre
quencyiinitheipopulation.iwhatiisitheilikelihoodithatiairando
mipersonihasitheisameigenotypeiasitheiperpetrator'siDNAifo
undiatiaicrimeiscene?i-iCORRECTiANSWERS-1/100i(why???)

homozygousi-iCORRECTiANSWERS-
hasitoiinheritisameiallele,isameiforiSTRsi
10,i10ixi12,i14inotihomozygousiifi10i12iori10i14

moreiquestionsiaboutipossibleiSTRialleleicombosi-
iCORRECTiANSWERS-crossithemilikeiaipunnettisuqareistill



forianistrilocusi->imanyi(2iori3idozeniorievenimore!)i-
iCORRECTiANSWERS-




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,allelesiexistiwithinitheipopulation,ibutieachiindividualicanio
nlyihaveitwoiofithem

manyiindividualsihaveidifferenti-iCORRECTiANSWERS-
STRiloci:iatidifferentipaceiandihowimanyiofithem

creatingiaiDNAifingerprinti-iCORRECTiANSWERS-
1.idnaifragmenticontainingieachiSTRiregioniisiamplified.ires
ultsiinihugeinumbersiofithoseifragments
2.ifragmentsiseparatedibyisize,iusingielectrophoresis
3.istriregioniisistainedionigel

USicombinediDNAiindexisystemi(CODIS)idatabaseiincludesi-
iCORRECTiANSWERS-

20iSTR,iscatterediacrossihumanigenome.

humanipaternityitestingi-iCORRECTiANSWERS-
analyzingi1ilocusi
whatidoitheibandsirepresent?i
-
irepresentifragmentithat'sibeenicutionieachiside,iamountiofid

istanceirelateditoihowimanyirepeatsithereiare.i
whichipairiofipeopleiareitheiparentsiofieach?

dnaifingerprintingichallengesiandicontroversiesi-
iCORRECTiANSWERS-1.ioverlapiofistrsi

2.ihowimanyistrsishouldiweicompare?i
3.ihowilikelyiisiaimatch?
imultiplyi4iprobabilitiesiofimatchingi1ibandibyieachiother.i-

>icanijuriesiunderstandithis?i
4.iareithereisubpopulationidifferences?
idoesiitimatteriifieveryipersoniwithiniaisubpopulationihasithei

sameiallelesiforianistr?iwhy?i
5.idoihumansimakeimistakes?
6.ihowisureidoiweiwannaibe?

whatiareisomeithingsithatilivingisystemsineed?i-
iCORRECTiANSWERS-fuel

1.irawimaterialsiforigrowthi


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, 2.ienergyitoidoithingsithatiwon'tihappenispontaneouslyi(ex:i
walking,igrowinginewitissue,iaddingimuscleimass,ireproduct
ion)

fuelicomesifromi-iCORRECTiANSWERS-
energyistorediinichemicalibonds

whoicreatesienergyiinitially?i-iCORRECTiANSWERS-
photosyntheticiorganisms

howitoireleaseienergyi-iCORRECTiANSWERS-
breakingibondsithatiareilower

photosynthesisi-iCORRECTiANSWERS-
putienergyiinifromitheisun,ibuildingiupibondsiinicarbsithatiar
eilatericonverted

photosynthesisiisilikei-iCORRECTiANSWERS-
eatingiinireverse

whatiisidoingi"work"i-iCORRECTiANSWERS-
breakingibondsiandireforminginewibondsireleasesienergyith
aticanibeiharnesseditoidoi"work"

howidoiweipowerimachines?i-iCORRECTiANSWERS-
gasolineiandimanyiotherifuelsi
butiforiouripurposes:ibreakitheibond,iformiaibondiatilowerien
ergy,iharnessiextraienergyitoidoistuff

hydrocarbonsi-iCORRECTiANSWERS-
moleculesiwithichainsioficarboniandihydrogeniatomsi(5-
12icarbons)

carienginesi-iCORRECTiANSWERS-
combustihydrocarbons,iforminginewibonds,ireleasingienerg
yithaticanibeiharnessed




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