PATTERNS OF INHERITANCE EXAM
QUESTIONS AND CORRECT
ANSWERS
DoesA2independentA2assortmentA2occurA2inA2mitosisA2orA2meiosis?A2-A2Ans--Meiosis
whichA2ofA2theA2rowsA2AA2toA2D,A2correctlyA2describesA2howA2geneticA2variationA2isA2achie
vedA2duringA2meiosisA2-A2Ans--C
DihybridA2ratioA2-A2Ans--9:3:3:1
epistasisA2ratioA2-A2Ans--9:3:4A2orA29:3:1
DescribeA2inA2wordsA2howA2thisA2phenotypicA2ratioA2mightA2beA2differentA2ifA2theA2twoA2ge
nesA2wereA2autosomallyA2linkedA2-A2Ans--HigherA2proportionA2ofA2heterozygous
AllelesA2notA2completelyA2remixed
(pigeon)A2explainA2whyA2theA2observedA2resultsA2didA2notA2exactlyA2matchA2theA2predicted
A2resultsA2-A2Ans--randomA2fertilisation
WhatA2effectA2wouldA2addingA2theA2unexpectedA2resultA2(0)A2intoA2theA2resultsA2tableA2hav
eA2onA2theA2valueA2ofA2chi-squaredA2?A2-A2Ans--TheA2valueA2wouldA2riseA2toA2infinity
AssumingA2thatA2theA2studentA2hadA2madeA2anA2accurateA2predictionA2aboutA2theA2ratioA2
ofA2theA2offspring,A2whatA2mightA2theA2breederA2haveA2concludedA2aboutA2theA2parentsA2o
fA2theA2chicksA2inA2yearA24A2?A2-A2Ans--TheyA2wereA2notA2monogamousA2/
A2anotherA2birdA2wasA2involved
ExplainA2howA2youA2reachedA2theA2conclusionA2aboutA2theA2birdsA2notA2beingA2monogam
ousA2-A2Ans--
InA2femaleA2offspringA2theA2alleleA2forA2featherA2colourA2comesA2fromA2theA2maleA2parent
OriginalA2maleA2didA2notA2holdA2alleleA2forA2brownA2feathers
BrownA2featherA2alleleA2inA2femaleA2wouldA2notA2produceA2produceA2brownA2femaleA2offs
pring
suggestA2howA2alleleA2BA2inhibitsA2theA2expressionA2ofA2alleleA2AA2-A2Ans--
AlleleA2BA2codesA2forA2aA2protein.
TheA2proteinA2attachesA2toA2theA2promoterA2geneA2ofA2alleleA2A
AlleleA2AA2can'tA2beA2transcribedA2toA2mRNA
theA2productA2ofA2BA2inhibitsA2theA2enzymesA2producedA2byA2A
QUESTIONS AND CORRECT
ANSWERS
DoesA2independentA2assortmentA2occurA2inA2mitosisA2orA2meiosis?A2-A2Ans--Meiosis
whichA2ofA2theA2rowsA2AA2toA2D,A2correctlyA2describesA2howA2geneticA2variationA2isA2achie
vedA2duringA2meiosisA2-A2Ans--C
DihybridA2ratioA2-A2Ans--9:3:3:1
epistasisA2ratioA2-A2Ans--9:3:4A2orA29:3:1
DescribeA2inA2wordsA2howA2thisA2phenotypicA2ratioA2mightA2beA2differentA2ifA2theA2twoA2ge
nesA2wereA2autosomallyA2linkedA2-A2Ans--HigherA2proportionA2ofA2heterozygous
AllelesA2notA2completelyA2remixed
(pigeon)A2explainA2whyA2theA2observedA2resultsA2didA2notA2exactlyA2matchA2theA2predicted
A2resultsA2-A2Ans--randomA2fertilisation
WhatA2effectA2wouldA2addingA2theA2unexpectedA2resultA2(0)A2intoA2theA2resultsA2tableA2hav
eA2onA2theA2valueA2ofA2chi-squaredA2?A2-A2Ans--TheA2valueA2wouldA2riseA2toA2infinity
AssumingA2thatA2theA2studentA2hadA2madeA2anA2accurateA2predictionA2aboutA2theA2ratioA2
ofA2theA2offspring,A2whatA2mightA2theA2breederA2haveA2concludedA2aboutA2theA2parentsA2o
fA2theA2chicksA2inA2yearA24A2?A2-A2Ans--TheyA2wereA2notA2monogamousA2/
A2anotherA2birdA2wasA2involved
ExplainA2howA2youA2reachedA2theA2conclusionA2aboutA2theA2birdsA2notA2beingA2monogam
ousA2-A2Ans--
InA2femaleA2offspringA2theA2alleleA2forA2featherA2colourA2comesA2fromA2theA2maleA2parent
OriginalA2maleA2didA2notA2holdA2alleleA2forA2brownA2feathers
BrownA2featherA2alleleA2inA2femaleA2wouldA2notA2produceA2produceA2brownA2femaleA2offs
pring
suggestA2howA2alleleA2BA2inhibitsA2theA2expressionA2ofA2alleleA2AA2-A2Ans--
AlleleA2BA2codesA2forA2aA2protein.
TheA2proteinA2attachesA2toA2theA2promoterA2geneA2ofA2alleleA2A
AlleleA2AA2can'tA2beA2transcribedA2toA2mRNA
theA2productA2ofA2BA2inhibitsA2theA2enzymesA2producedA2byA2A