Meisel & Dauwalder Gene cs Exam 1
h h h h h
UniversityhofhHoustonhFallh2018hTesth1h(3301)
Chaptersh1-5,17
ChihSquarehTest
Youhwouldhlikehtohknowhwhetherhthehprogenyhofhahpairhofhmatedhfruithfliesharehdistributedhamonghthehresu
l nghfourhphenotypichclasseshinhah1:1:1:1hra o.hYouhperformhahchi-
squarehtesthandhobtainhahphvaluehofh0.04.hAssuminghyouhhavehdonehthehtesthcorrectly,hselecththehbesthinter
preta onhofhthishresult.
-Thehtraitshbeinghstudiedharehonhseparatehchromosomes.
-Approximatelyh4%hofhthehoffspringhliehoutsidehthehrangehofhvalueshexpectedhforhah1:1:1:1hra o.
-Thehphenotypichra ohishactuallyh9:3:3:1
-Thehdifferenceshbetweenhthehobservedhandhexpectedhcountsharehtoohlargehtohbeha ributedhtohchance.
Thehdifferenceshbetweenhthehobservedhandhexpectedhcountsharehtoohlargehtohbeha ributedhtohchance.
Thehlargerhthehnumberhofhtotalhindividualhcountshinhahchi-
squarehtest,hthehhigherhthehdegreeshofhfreedomh(df).
T/F
False
Thehexpectedhra ohofhphenotypeshamonghthehprogenyhofhahtesthcrosshish1:1:1:1.hOuthofh200htotalhresul ng
hprogeny,h48hoccurhinhonehofhthehfourhphenotypichclasses.hGivenhthishinforma on,hwhichhofhthehfollowingh
musthalsohbehtrue?
-Thehvaluehofhobservedh-hexpectedhforhthishcellh=h-2.
-Thehprogenyhofhthishcrosshdohnothconformhtohah1:1:1:1ra o.
-
Sinceh48hishsohclosehtohthehexpectedhvalue,htherehishnohneedhtohcalculatehchihsquarehbeforehdrawinghahconc
lusionhabouththehra o.
-Athleasthonehaddi onalhcellhmusthalsohcontainhahcounthofh48.
Thehvaluehofhobservedh-hexpectedhforhthishcellh=h-2.
Inhanhindividualhthathishheterozygoushforhahpar cularhtrait,hexpressionhofhthehrecessivehallelehishmasked.
T/F
True
Roundh(R)hseedhshapehishdominanthtohwrinkledh(r)hseedhshapehinhpeahplants.hIfhanhRRhplanthishcrossedhwith
hanhrrhplant,hwhathishthehfrequencyhofhphenotypeshinhthehF2hgenera on?
-Allhroundhseeds
-Allhwrinkledhseeds
,-¼hRR,h½hRr,h¼hrr
-3hroundhseeds,h1hwrinkledhseed
3hroundhseeds,h1hwrinkledhseed
IfhthehfirsththreehF2hoffspringhgrownhfromhthehcrosshdescribedhaboveharehround,hwhathishthehprobabilityhth
aththehnexthF2hoffspringhwillhbehwrinkled?
-100%
-75%
-0%
-25%
25%
Separa onhofhsisterhchroma dshoccursh_______.
-athanaphasehinhmitosishandhanaphasehIIhinhmeiosis
-inhmeiosis,hbuthnothinhmitosis
-athanaphasehIIhinhmitosishandhanaphasehinhmeiosis
-inhmitosis,hbuthnothinhmeiosis
athanaphasehinhmitosishandhanaphasehIIhinhmeiosis
Thehendhresulthofhmeiosishishfourhhaploidhdaughterhcells.
T/F
True
Novelhcombina onshofhgeneshcanharisehfromh_______.
-reciprocalhexchangehofhDNAhbetweenhsisterhchroma dshduringhprophase
-reciprocalhexchangehofhDNAhbetweenhhomologshduringhprophasehI
-reciprocalhexchangehofhDNAhbetweenhhomologshduringhprophasehII
-thehalignmenthofhchromosomeshathMetaphasehII
reciprocalhexchangehofhDNAhbetweenhhomologshduringhprophasehI
Anhexperiencedhgoldfishhbreederhreceiveshtwohunusualhmalehgoldfish.hOnehishblackhratherhthanhgold,handht
hehotherhhashahsinglehtailhfinhratherhthanhahsplithtailhfin.hThehbreederhcrosseshthehblackhmalehtohahfemalehth
athishgold.hAllhthehF1harehgold.hShehalsohcrosseshthehsingle-
finnedhmalehtohahfemalehwithhahsplithtailhfin.hAllhthehF1hhavehahsplithtailhfin.hShehthenhcrosseshthehblackhmal
ehtohF1hgoldhfemaleshand,hseparately,hcrosseshthehsingle-finnedhmalehtohF1hsplit-
finnedhfemales.hThehresultshofhthehcrossesharehshownhbelow.
Blackhmaleh×F1hgoldhfemale:
Goldh32
Blackh34
Single-finnedhmaleh×F1hsplit-finnedhfemale:
, Splithfinh41
Singlehfinh39
1.hWhathdohthehresultshofhthesehcrosseshsuggesthabouththehinheritancehofhcolorhandhtailhfinhshapehinhgoldfi
sh?
-Thehinheritancehofhcolorhandhfinhshapeharehduehtohsegrega onhofhtwohalleleshaththehsamehgene.
-Thehinheritancehofhcolorhandhfinhshapehareheachhduehtohsegrega onhofhtwohalleleshathahsinglehgene.
-
Thehinheritancehofhcolorhishduehtohsegrega onhofhtwohalleleshathdifferenthgenes;hthehsamehishtruehforhfinhsh
ape.
2.hIshblackhcolorhdominanthorhrecessive?hChoosehthehcorrecthexplana on.
-Dominant;hthereharehmorehblackhfishhinhF2hprogeny,hindica nghthathblackhishdominanthtohgold.
-Dominant;hF1hprogenyharehallhgold,hindica nghthathblackhishdominanthtohgold.
-Recessive;hF1hprogenyharehallhgold,hindica nghthathgoldhishdominanthtohblack.
-Recessive;hthereharehmorehblackhfishhinhF2hprogeny,hindica nghthathgoldhishdominanthtohblack.
3.hIshsinglehtailhdominanthorhrecessive?hChoosehthehcorrecthexplana on.
-
Dominant;hthereharehmorehfishhwithhsplithtailhfinhinhF2hprogeny,hindica nghthathsinglehtailhfinhishdominantht
ohsplithtailhfin.
-Recessive;hF1hprogenyharehallhsplithtailhfin,hindica nghthathsplithtailhfinhishdominanthtohsinglehtailhfin.
-Dominant;hF1hprogenyharehallhsplithtailhfin,hindica nghthathsinglehtailhfinhishdominanthtohsplithtailhfin.
-
Recessive;hthereharehmorehfishhwithhsplithtailhfinhinhF2hprogeny,hindica nghthathsplithtailhfinhishdominanthtohs
inglehtailhfin.
4.hWhathishthehchi-squarehvaluehforhcolor?
Expresshyourhanswerhtohthreehdecimalhplaces.
5.hWhathishthehchi-squarehvaluehforhfinhshape?
Expresshyourhanswerhtohthreehdecimalhplaces.
6.hWhathconclusionhcanhbehdrawnhfromhthehchi-squarehanalysishdatah(partshDhandhE)?
-Thehdataharehnothauthen c.
-Thehonehgenehwithhtwohallelehhypotheseshforhcolorhandhfinhshapehcanhbehrejected.
-Thehonehgenehwithhtwohallelehhypotheseshforhcolorhandhfinhshapehcannothbehrejected.
-Thehdataharehauthen c.
1.hThehinheritancehofhcolorhandhfinhshapehareheachhduehtohsegrega onhofhtwohalleleshathahsinglehgene.
2.hRecessive;hF1hprogenyharehallhgold,hindica nghthathgoldhishdominanthtohblack.
h h h h h
UniversityhofhHoustonhFallh2018hTesth1h(3301)
Chaptersh1-5,17
ChihSquarehTest
Youhwouldhlikehtohknowhwhetherhthehprogenyhofhahpairhofhmatedhfruithfliesharehdistributedhamonghthehresu
l nghfourhphenotypichclasseshinhah1:1:1:1hra o.hYouhperformhahchi-
squarehtesthandhobtainhahphvaluehofh0.04.hAssuminghyouhhavehdonehthehtesthcorrectly,hselecththehbesthinter
preta onhofhthishresult.
-Thehtraitshbeinghstudiedharehonhseparatehchromosomes.
-Approximatelyh4%hofhthehoffspringhliehoutsidehthehrangehofhvalueshexpectedhforhah1:1:1:1hra o.
-Thehphenotypichra ohishactuallyh9:3:3:1
-Thehdifferenceshbetweenhthehobservedhandhexpectedhcountsharehtoohlargehtohbeha ributedhtohchance.
Thehdifferenceshbetweenhthehobservedhandhexpectedhcountsharehtoohlargehtohbeha ributedhtohchance.
Thehlargerhthehnumberhofhtotalhindividualhcountshinhahchi-
squarehtest,hthehhigherhthehdegreeshofhfreedomh(df).
T/F
False
Thehexpectedhra ohofhphenotypeshamonghthehprogenyhofhahtesthcrosshish1:1:1:1.hOuthofh200htotalhresul ng
hprogeny,h48hoccurhinhonehofhthehfourhphenotypichclasses.hGivenhthishinforma on,hwhichhofhthehfollowingh
musthalsohbehtrue?
-Thehvaluehofhobservedh-hexpectedhforhthishcellh=h-2.
-Thehprogenyhofhthishcrosshdohnothconformhtohah1:1:1:1ra o.
-
Sinceh48hishsohclosehtohthehexpectedhvalue,htherehishnohneedhtohcalculatehchihsquarehbeforehdrawinghahconc
lusionhabouththehra o.
-Athleasthonehaddi onalhcellhmusthalsohcontainhahcounthofh48.
Thehvaluehofhobservedh-hexpectedhforhthishcellh=h-2.
Inhanhindividualhthathishheterozygoushforhahpar cularhtrait,hexpressionhofhthehrecessivehallelehishmasked.
T/F
True
Roundh(R)hseedhshapehishdominanthtohwrinkledh(r)hseedhshapehinhpeahplants.hIfhanhRRhplanthishcrossedhwith
hanhrrhplant,hwhathishthehfrequencyhofhphenotypeshinhthehF2hgenera on?
-Allhroundhseeds
-Allhwrinkledhseeds
,-¼hRR,h½hRr,h¼hrr
-3hroundhseeds,h1hwrinkledhseed
3hroundhseeds,h1hwrinkledhseed
IfhthehfirsththreehF2hoffspringhgrownhfromhthehcrosshdescribedhaboveharehround,hwhathishthehprobabilityhth
aththehnexthF2hoffspringhwillhbehwrinkled?
-100%
-75%
-0%
-25%
25%
Separa onhofhsisterhchroma dshoccursh_______.
-athanaphasehinhmitosishandhanaphasehIIhinhmeiosis
-inhmeiosis,hbuthnothinhmitosis
-athanaphasehIIhinhmitosishandhanaphasehinhmeiosis
-inhmitosis,hbuthnothinhmeiosis
athanaphasehinhmitosishandhanaphasehIIhinhmeiosis
Thehendhresulthofhmeiosishishfourhhaploidhdaughterhcells.
T/F
True
Novelhcombina onshofhgeneshcanharisehfromh_______.
-reciprocalhexchangehofhDNAhbetweenhsisterhchroma dshduringhprophase
-reciprocalhexchangehofhDNAhbetweenhhomologshduringhprophasehI
-reciprocalhexchangehofhDNAhbetweenhhomologshduringhprophasehII
-thehalignmenthofhchromosomeshathMetaphasehII
reciprocalhexchangehofhDNAhbetweenhhomologshduringhprophasehI
Anhexperiencedhgoldfishhbreederhreceiveshtwohunusualhmalehgoldfish.hOnehishblackhratherhthanhgold,handht
hehotherhhashahsinglehtailhfinhratherhthanhahsplithtailhfin.hThehbreederhcrosseshthehblackhmalehtohahfemalehth
athishgold.hAllhthehF1harehgold.hShehalsohcrosseshthehsingle-
finnedhmalehtohahfemalehwithhahsplithtailhfin.hAllhthehF1hhavehahsplithtailhfin.hShehthenhcrosseshthehblackhmal
ehtohF1hgoldhfemaleshand,hseparately,hcrosseshthehsingle-finnedhmalehtohF1hsplit-
finnedhfemales.hThehresultshofhthehcrossesharehshownhbelow.
Blackhmaleh×F1hgoldhfemale:
Goldh32
Blackh34
Single-finnedhmaleh×F1hsplit-finnedhfemale:
, Splithfinh41
Singlehfinh39
1.hWhathdohthehresultshofhthesehcrosseshsuggesthabouththehinheritancehofhcolorhandhtailhfinhshapehinhgoldfi
sh?
-Thehinheritancehofhcolorhandhfinhshapeharehduehtohsegrega onhofhtwohalleleshaththehsamehgene.
-Thehinheritancehofhcolorhandhfinhshapehareheachhduehtohsegrega onhofhtwohalleleshathahsinglehgene.
-
Thehinheritancehofhcolorhishduehtohsegrega onhofhtwohalleleshathdifferenthgenes;hthehsamehishtruehforhfinhsh
ape.
2.hIshblackhcolorhdominanthorhrecessive?hChoosehthehcorrecthexplana on.
-Dominant;hthereharehmorehblackhfishhinhF2hprogeny,hindica nghthathblackhishdominanthtohgold.
-Dominant;hF1hprogenyharehallhgold,hindica nghthathblackhishdominanthtohgold.
-Recessive;hF1hprogenyharehallhgold,hindica nghthathgoldhishdominanthtohblack.
-Recessive;hthereharehmorehblackhfishhinhF2hprogeny,hindica nghthathgoldhishdominanthtohblack.
3.hIshsinglehtailhdominanthorhrecessive?hChoosehthehcorrecthexplana on.
-
Dominant;hthereharehmorehfishhwithhsplithtailhfinhinhF2hprogeny,hindica nghthathsinglehtailhfinhishdominantht
ohsplithtailhfin.
-Recessive;hF1hprogenyharehallhsplithtailhfin,hindica nghthathsplithtailhfinhishdominanthtohsinglehtailhfin.
-Dominant;hF1hprogenyharehallhsplithtailhfin,hindica nghthathsinglehtailhfinhishdominanthtohsplithtailhfin.
-
Recessive;hthereharehmorehfishhwithhsplithtailhfinhinhF2hprogeny,hindica nghthathsplithtailhfinhishdominanthtohs
inglehtailhfin.
4.hWhathishthehchi-squarehvaluehforhcolor?
Expresshyourhanswerhtohthreehdecimalhplaces.
5.hWhathishthehchi-squarehvaluehforhfinhshape?
Expresshyourhanswerhtohthreehdecimalhplaces.
6.hWhathconclusionhcanhbehdrawnhfromhthehchi-squarehanalysishdatah(partshDhandhE)?
-Thehdataharehnothauthen c.
-Thehonehgenehwithhtwohallelehhypotheseshforhcolorhandhfinhshapehcanhbehrejected.
-Thehonehgenehwithhtwohallelehhypotheseshforhcolorhandhfinhshapehcannothbehrejected.
-Thehdataharehauthen c.
1.hThehinheritancehofhcolorhandhfinhshapehareheachhduehtohsegrega onhofhtwohalleleshathahsinglehgene.
2.hRecessive;hF1hprogenyharehallhgold,hindica nghthathgoldhishdominanthtohblack.
