20
,
, Chapter1:DNAStructureandFunction
MultipleChoice
Identifythechoicethatbest completesthestatement oranswers thequestion.
A. n 1. Inwhichbodyorcellareaaremostgenesinhumanslocated?
A.
Nucleus
B.
Mitochondrion
C.
Cytoplasm
D.
Plasmamembrane
A. n 2. Whichcondition orstatement exemplifiestheconcept ofgenomicsratherthangenetics?
b b n
A.
Thegeneforinsulinislocatedonchromosome11inallpeople.
B.
Expressionofanysinglegeneisdependent oninheritingtwoalleles.
n
C.
Sex-linkedrecessivedisordersaffect malesmoreoftenthanfemales.
D.
Onealleleforeachgeneisinheritedfromthemother,andoneisinheritedfrom
thefather.
A. 3. Whati sthepurposeofphosphorousinaDNAstrand?
b
A. Linkingthenucleotidesintoastrand
B. Holding complementarystrandstogether
b
C. Ensuringthat apurineisalwayspairedwithapyrimidine
b
D. Preventing theseparationofdouble-strandedDNAintosingle-strandedDNA
A.
4.Whatisthetermusedtodefinealternativeformsofagenethat mayresult indifferen
n b
t f expression ofthetraitcodedforbythat gene?
n
A.
Alleles
B.
Bases
C.
Centromeres
D.
Diploids
D. 5.Whatpercentageofbasesinastretchofdouble-strandedDNAthat contains30%guanine
(G) baseswouldbeadenine(A)?
A.
70%
B.
60%
C.
30%
D.
20%
C. 6. What isthe termused todescribe theorganized pictureofthe pairedchromosomeswithina
cell used to determinewhether chromosome numbers, structures, and banding patterns
arenormal?
A.
Pedigree
B.
Phenotype
C.
Karyotype
D.
Autotype
D. n 7. WhatwouldbethesequenceofDNAthati bff
scomplementarytoaDNAsectionwiththebase
sequenceofGGTCAATCCTTAG?
A.
GATTCCTAACTGG
, B.
TTGACCGAAGGCT
C.
AACTGGCTTCCGA
D.
CCAGTTAGGAATC