BIODl 210/l BIOD210l Finall Exam:l (Latestl
2025/l 2026l Update)l Geneticsl |l Questionsl
&l Answers|l Gradel A|l 100%l Correctl
(Verifiedl Solutions)-l Portagel Learning
Q:l Whichl ofl thel followingl statementsl isl correct?
Thel Xl chromosomel isl muchl largerl thanl thel Yl chromosome.
Thel Xl andl Yl chromosomesl sharel nol homology.
Thel Xl chromosomel isl thel drivingl determinantl forl sexl ofl anl offspring.
Incorrectl segregationl ofl Xl andl Yl chromosomesl (forl instancel al femalel withl XXXl orl Xl
genotype)l isl alwaysl embryonicl lethal.
Answer:
Thel Xl chromosomel isl muchl largerl thanl thel Yl chromosome.
Q:l Thel DNAl inl al _____l isl packagedl inl thel head,l whichl isl shapedl likel al capsule.l
Thel _____l ofl thel phagel pushesl thel DNAl throughl thel hostl celll membranel muchl likel al
syringe.
Answer:
Phagel ;l Sheath
Q:l Thel onlyl trisomyl disorderl inl whichl individualsl routinelyl livel longerl thanl onel yearl
isl ____l Thel incidencel ofl thisl disorderl seemsl tol increasel withl maternall ____.l
Downl syndromel (orl trisomyl 21);l age
,Downl syndrome;l health
Cysticl fibrosis;l age
Klinefelterl syndrome;l age
Answer:
Downl syndromel ;l age
Q:l Truel orl False.l Epigeneticl therapyl doesl notl dependl onl changesl inl thel DNAl
sequence.
Answer:
True
Q:l Inl al fewl sentences,l summarizel Darwin'sl theoryl ofl naturall selection.
Answer:
Darwin'sl theoryl saysl thatl organismsl withl helpfull traitsl survivel andl reproducel more.l
Thesel traitsl getl passedl on,l causingl speciesl tol changel overl time.
Q:l Considerl genesl A,l Bl andl Cl whichl arel locatedl onl al chromosomel inl thatl order.l Ifl
genesl Al andl Bl crossl overl 40%l ofl thel time,l andl genesl Bl andl Cl crossl overl 30%l ofl
thel time,l whatl isl thel probabilityl ofl al doublel crossoverl betweenl Al Bl andl C?
Answer:
(0.4)*(0.3)=0.12,l 12%l chancel ofl thisl crossover.
Q:l Anl enzymel thatl canl bel turnedl offl byl appropriatel signalsl orl conditionsl isl called:
,Repressible
Stationary
Constitutive
Inducible
Answer:
Repressible
Q:l Thel lossl orl gainl ofl onel chromosome,l butl notl thel set,l isl referredl tol asl
aneuploidy.l Thel mostl commonl formsl ofl aneuploidyl arel ______l (2n-1)l andl ______l
(2n+1).
Monosomy;l trisomy
Trisomy;l monosomy
Quaternomy;l monosomy
Monosomy,l quaternomy
Answer:
Monosomy;l trisomy
Q:l Explainl howl cancerl cellsl controll thel extracellularl matrixl tol drivel thel processl ofl
metastasis.l Givel anl examplel ofl al proteinl wel discussedl thatl controlsl thisl inl breastl
cancerl cells.
Answer:
Cancerl cellsl metastasizel byl releasing
proteasesl thatl breakl downl thel extracellular
matrix,l allowingl theml tol spread.l Inl breast
, cancer,l MMP1l andl MMP2l arel keyl proteins
thatl helpl digestl thisl matrixl andl promote
tumorl invasion.
Q:l Considerl 3l genesl thatl assortl independentlyl inl squirrels.l Al genel forl brownl colorl isl
dominantl (D),l al genel forl al bushyl taill isl dominantl (B),l andl al genel forl refluxl afterl
eatingl acornsl isl recessivel (a).l Usel thel productl lawl tol predictl thel likelihoodl ofl
producingl al squirrell (froml parentsl thatl arel heterozygousl forl eachl traitl individually)l thatl
isl brown,l bushy-tailed,l andl hasl refluxl froml alll thosel acorns.
Answer:
(3/4)l ×l (3/4)l ×l (1/4)l =l 9/64l probabilityl ofl thisl squirrell beingl brown,l bushy-tailed,l andl
havingl reflux.
Q:l Thel geneticl flowl ofl materiall betweenl organismsl isl NOTl dependentl onl whichl ofl
thesel criteria?
Replicationl ofl thel material
Independentl assortmentl ofl thel genes
Storagel ofl thel information
Variationl ofl DNAl throughl mutation
Answer:
Independentl assortmentl ofl thel genes
Q:l Filll inl thel Blank:l Thel ____l elementl isl al _____l -actingl elementl thatl isl locatedl
upstreaml froml thel sitel ofl transcriptionl initiation.
Answer:
Pribnowl ;l Cis
2025/l 2026l Update)l Geneticsl |l Questionsl
&l Answers|l Gradel A|l 100%l Correctl
(Verifiedl Solutions)-l Portagel Learning
Q:l Whichl ofl thel followingl statementsl isl correct?
Thel Xl chromosomel isl muchl largerl thanl thel Yl chromosome.
Thel Xl andl Yl chromosomesl sharel nol homology.
Thel Xl chromosomel isl thel drivingl determinantl forl sexl ofl anl offspring.
Incorrectl segregationl ofl Xl andl Yl chromosomesl (forl instancel al femalel withl XXXl orl Xl
genotype)l isl alwaysl embryonicl lethal.
Answer:
Thel Xl chromosomel isl muchl largerl thanl thel Yl chromosome.
Q:l Thel DNAl inl al _____l isl packagedl inl thel head,l whichl isl shapedl likel al capsule.l
Thel _____l ofl thel phagel pushesl thel DNAl throughl thel hostl celll membranel muchl likel al
syringe.
Answer:
Phagel ;l Sheath
Q:l Thel onlyl trisomyl disorderl inl whichl individualsl routinelyl livel longerl thanl onel yearl
isl ____l Thel incidencel ofl thisl disorderl seemsl tol increasel withl maternall ____.l
Downl syndromel (orl trisomyl 21);l age
,Downl syndrome;l health
Cysticl fibrosis;l age
Klinefelterl syndrome;l age
Answer:
Downl syndromel ;l age
Q:l Truel orl False.l Epigeneticl therapyl doesl notl dependl onl changesl inl thel DNAl
sequence.
Answer:
True
Q:l Inl al fewl sentences,l summarizel Darwin'sl theoryl ofl naturall selection.
Answer:
Darwin'sl theoryl saysl thatl organismsl withl helpfull traitsl survivel andl reproducel more.l
Thesel traitsl getl passedl on,l causingl speciesl tol changel overl time.
Q:l Considerl genesl A,l Bl andl Cl whichl arel locatedl onl al chromosomel inl thatl order.l Ifl
genesl Al andl Bl crossl overl 40%l ofl thel time,l andl genesl Bl andl Cl crossl overl 30%l ofl
thel time,l whatl isl thel probabilityl ofl al doublel crossoverl betweenl Al Bl andl C?
Answer:
(0.4)*(0.3)=0.12,l 12%l chancel ofl thisl crossover.
Q:l Anl enzymel thatl canl bel turnedl offl byl appropriatel signalsl orl conditionsl isl called:
,Repressible
Stationary
Constitutive
Inducible
Answer:
Repressible
Q:l Thel lossl orl gainl ofl onel chromosome,l butl notl thel set,l isl referredl tol asl
aneuploidy.l Thel mostl commonl formsl ofl aneuploidyl arel ______l (2n-1)l andl ______l
(2n+1).
Monosomy;l trisomy
Trisomy;l monosomy
Quaternomy;l monosomy
Monosomy,l quaternomy
Answer:
Monosomy;l trisomy
Q:l Explainl howl cancerl cellsl controll thel extracellularl matrixl tol drivel thel processl ofl
metastasis.l Givel anl examplel ofl al proteinl wel discussedl thatl controlsl thisl inl breastl
cancerl cells.
Answer:
Cancerl cellsl metastasizel byl releasing
proteasesl thatl breakl downl thel extracellular
matrix,l allowingl theml tol spread.l Inl breast
, cancer,l MMP1l andl MMP2l arel keyl proteins
thatl helpl digestl thisl matrixl andl promote
tumorl invasion.
Q:l Considerl 3l genesl thatl assortl independentlyl inl squirrels.l Al genel forl brownl colorl isl
dominantl (D),l al genel forl al bushyl taill isl dominantl (B),l andl al genel forl refluxl afterl
eatingl acornsl isl recessivel (a).l Usel thel productl lawl tol predictl thel likelihoodl ofl
producingl al squirrell (froml parentsl thatl arel heterozygousl forl eachl traitl individually)l thatl
isl brown,l bushy-tailed,l andl hasl refluxl froml alll thosel acorns.
Answer:
(3/4)l ×l (3/4)l ×l (1/4)l =l 9/64l probabilityl ofl thisl squirrell beingl brown,l bushy-tailed,l andl
havingl reflux.
Q:l Thel geneticl flowl ofl materiall betweenl organismsl isl NOTl dependentl onl whichl ofl
thesel criteria?
Replicationl ofl thel material
Independentl assortmentl ofl thel genes
Storagel ofl thel information
Variationl ofl DNAl throughl mutation
Answer:
Independentl assortmentl ofl thel genes
Q:l Filll inl thel Blank:l Thel ____l elementl isl al _____l -actingl elementl thatl isl locatedl
upstreaml froml thel sitel ofl transcriptionl initiation.
Answer:
Pribnowl ;l Cis
