Meisel&Dauwalder Genetics Exam 1 verified study guide

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.