Life Science 15 Phelan Exam Questions with 100% Correct
Answers Verified Updated 2024
evolution y- yAnswer y- y y ya ychange yin yallele yfrequencies yover ytime
allele y- yAnswer y- y y yone yvariant yof ya ygene
gene y- yAnswer y- y y ysection yof yDNA yinstructing yhow yto yproduce ya ytrait
natural yselection y- yAnswer y- y y yvariation, yheritability, ydifferential yreproductive ysuccess
fitness y- yAnswer y- y y ythe yrelative yreproductive ysuccess yof ya ygenotype yor yphenotype
4 yagents yof yevolutions y- yAnswer y- y y ynatural yselection, ymutation, ygene yflow, ygenetic ydrift
natural yselection y- yAnswer y- y y ynon-random yelimination yof yalleles
mutation y- yAnswer y- y y ya ydirect yalteration yof yDNA yso ythat yone yallele yis ychanged yinto yanother
migration/gene yflow y- yAnswer y- y y ychange yin yallele yfrequencies ybecause ysome ymembers yleave
yand yothers yarrive
genetic ydrift y- yAnswer y- y y ya yrandom ychange yin yallele yfrequencies, ywill yoccur ymostly yin ysmall
ypopulations
sexual yselection y- yAnswer y- y y ytraits ythat yare ymore ydesirable yto ythe yopposite ysex yare yselected
yfor. ytrade-offs
norm yof yreaction y- yAnswer y- y y yrelationship ybetween ynature yand ynurture yin yproducing
yphenotypes, yone ygenotype yproducing ymultiple yphenotypes yin ydifferent yenvironments
mendel y- yAnswer y- y y yinheritance yof ypea yplants
homologous ypair y- yAnswer y- y y ytwo yversions yof ythe ysame ygene y(one yfrom yfather, yone yfrom
ymother)
karyotype y- yAnswer y- y y ypicture yof yall ychromosomes yin ya ycell
, mendels' ylaw yof ysegregation y- yAnswer y- y y ya ygamete yreceives yonly yone yallele yfrom ythe ypair yof
yalleles ypossessed yby yan yorganism
law yof yindependent yassortment y- yAnswer y- y y ythe yallele yyou ypass yfor yone ytrait yhas yno yeffect yon
ywhich yyou ypass yfor yanother ytrait
test ycross y- yAnswer y- y y ya ycross ybetween yan yorganism ywhose ygenotype yfor ya ycertain ytrait yis
yunknown yand yan yorganism ythat yis yhomozygous yrecessive yfor ythat ytrait yso ythe yunknown
ygenotype ycan ybe ydetermined yfrom ythat yof ythe yoffspring
methods yof ysex ydetermination y- yAnswer y- y y ymale/female yheterogamety, yploidy, yincubation
ytemperature
why ydoes ykindness yoccur? y- yAnswer y- y y yshared ygenes/kin yselection, yreciprocal yaltruism
two yways yto yincrease ya ygene's ymarket yshare y- yAnswer y- y y ydirect yand yindirect yfitness ymake yan
yallele ymore yprevalent yin ya ypopulation
hamilton's yrule y- yAnswer y- y y yevolution yto yfavor ya ybehavior, ythe ycost yto ythe ygiver ymust ybe yless
ythan ythe ybenefit yX ythe ycoefficient yof yrelatedness
methods yof ykin yrecognition y- yAnswer y- y y yspacial yassociation, ysocial yassociation, yphenotype
ymatching
ploidy y- yAnswer y- y y y# yreferring yto y# yof ychromosome ysets ypresent yin ya ycell. yhaploid y(gametes)
y=23, ydiploid y(all yothers) y=46
codominance y- yAnswer y- y y yA ycondition yin ywhich yboth yalleles yfor ya ygene yare yfully yexpressed
what yconditions yare yconducive yto yreciprocal yaltruism? y- yAnswer y- y y yrepeated yinteractions, yhigh
ybenefit yto yrecipient yrelative yto ythe ycost, yability yto ypunish ycheaters
ways yof yenhancing ycooperation y- yAnswer y- y y ytinkering ywith yperceived ycosts yand ybenefits,
ydistinguish ycheaters yand ykind ypeople, yreduce yperceived yvulnerability yof ypartners y(that ythey
ywon't yget ypaid yback)
altruism y- yAnswer y- y y yapparently yselfless ybehaviors yfor ythe ywelfare yof yothers yor yoneself
mitosis y- yAnswer y- y y yall ygenetic ymaterial yfrom ya ydiploid ycell yis yduplicated
meiosis y- yAnswer y- y y yall ygenetic ymaterial yfrom ya yhaploid ycell yis ycopied yand yforms ynew ygametes
DNA yfingerprinting y- yAnswer y- y y yprocess yof ycomparing ygenetic ymaterial yto ydetermine yDNA
ylinkage
null yhypothesis y- yAnswer y- y y ystating ythat ytwo ythings ydo ynot yhave ya yrelationship
superstition y- yAnswer y- y y yirrationally ybelieving ythat ycertain yactions ycan yinfluence yan youtcome
Answers Verified Updated 2024
evolution y- yAnswer y- y y ya ychange yin yallele yfrequencies yover ytime
allele y- yAnswer y- y y yone yvariant yof ya ygene
gene y- yAnswer y- y y ysection yof yDNA yinstructing yhow yto yproduce ya ytrait
natural yselection y- yAnswer y- y y yvariation, yheritability, ydifferential yreproductive ysuccess
fitness y- yAnswer y- y y ythe yrelative yreproductive ysuccess yof ya ygenotype yor yphenotype
4 yagents yof yevolutions y- yAnswer y- y y ynatural yselection, ymutation, ygene yflow, ygenetic ydrift
natural yselection y- yAnswer y- y y ynon-random yelimination yof yalleles
mutation y- yAnswer y- y y ya ydirect yalteration yof yDNA yso ythat yone yallele yis ychanged yinto yanother
migration/gene yflow y- yAnswer y- y y ychange yin yallele yfrequencies ybecause ysome ymembers yleave
yand yothers yarrive
genetic ydrift y- yAnswer y- y y ya yrandom ychange yin yallele yfrequencies, ywill yoccur ymostly yin ysmall
ypopulations
sexual yselection y- yAnswer y- y y ytraits ythat yare ymore ydesirable yto ythe yopposite ysex yare yselected
yfor. ytrade-offs
norm yof yreaction y- yAnswer y- y y yrelationship ybetween ynature yand ynurture yin yproducing
yphenotypes, yone ygenotype yproducing ymultiple yphenotypes yin ydifferent yenvironments
mendel y- yAnswer y- y y yinheritance yof ypea yplants
homologous ypair y- yAnswer y- y y ytwo yversions yof ythe ysame ygene y(one yfrom yfather, yone yfrom
ymother)
karyotype y- yAnswer y- y y ypicture yof yall ychromosomes yin ya ycell
, mendels' ylaw yof ysegregation y- yAnswer y- y y ya ygamete yreceives yonly yone yallele yfrom ythe ypair yof
yalleles ypossessed yby yan yorganism
law yof yindependent yassortment y- yAnswer y- y y ythe yallele yyou ypass yfor yone ytrait yhas yno yeffect yon
ywhich yyou ypass yfor yanother ytrait
test ycross y- yAnswer y- y y ya ycross ybetween yan yorganism ywhose ygenotype yfor ya ycertain ytrait yis
yunknown yand yan yorganism ythat yis yhomozygous yrecessive yfor ythat ytrait yso ythe yunknown
ygenotype ycan ybe ydetermined yfrom ythat yof ythe yoffspring
methods yof ysex ydetermination y- yAnswer y- y y ymale/female yheterogamety, yploidy, yincubation
ytemperature
why ydoes ykindness yoccur? y- yAnswer y- y y yshared ygenes/kin yselection, yreciprocal yaltruism
two yways yto yincrease ya ygene's ymarket yshare y- yAnswer y- y y ydirect yand yindirect yfitness ymake yan
yallele ymore yprevalent yin ya ypopulation
hamilton's yrule y- yAnswer y- y y yevolution yto yfavor ya ybehavior, ythe ycost yto ythe ygiver ymust ybe yless
ythan ythe ybenefit yX ythe ycoefficient yof yrelatedness
methods yof ykin yrecognition y- yAnswer y- y y yspacial yassociation, ysocial yassociation, yphenotype
ymatching
ploidy y- yAnswer y- y y y# yreferring yto y# yof ychromosome ysets ypresent yin ya ycell. yhaploid y(gametes)
y=23, ydiploid y(all yothers) y=46
codominance y- yAnswer y- y y yA ycondition yin ywhich yboth yalleles yfor ya ygene yare yfully yexpressed
what yconditions yare yconducive yto yreciprocal yaltruism? y- yAnswer y- y y yrepeated yinteractions, yhigh
ybenefit yto yrecipient yrelative yto ythe ycost, yability yto ypunish ycheaters
ways yof yenhancing ycooperation y- yAnswer y- y y ytinkering ywith yperceived ycosts yand ybenefits,
ydistinguish ycheaters yand ykind ypeople, yreduce yperceived yvulnerability yof ypartners y(that ythey
ywon't yget ypaid yback)
altruism y- yAnswer y- y y yapparently yselfless ybehaviors yfor ythe ywelfare yof yothers yor yoneself
mitosis y- yAnswer y- y y yall ygenetic ymaterial yfrom ya ydiploid ycell yis yduplicated
meiosis y- yAnswer y- y y yall ygenetic ymaterial yfrom ya yhaploid ycell yis ycopied yand yforms ynew ygametes
DNA yfingerprinting y- yAnswer y- y y yprocess yof ycomparing ygenetic ymaterial yto ydetermine yDNA
ylinkage
null yhypothesis y- yAnswer y- y y ystating ythat ytwo ythings ydo ynot yhave ya yrelationship
superstition y- yAnswer y- y y yirrationally ybelieving ythat ycertain yactions ycan yinfluence yan youtcome
