Biology 1104 Exam Questions with
Correct Answers 2025
AssumptionD-DCORRECTDANSWERD-
TheyDareDphilosophical,DfoundationalDstartingDpointsDthatDcannotDbeDproven.
ScientificDTheoryD-DCORRECTDANSWERD-
ADhighlyDvalidatedDexplanationDforDphenomena;DappliesDtoDALLDsystems
HypothesisD-DCORRECTDANSWERD-
ADsuppositionDaboutDaDspecificDsystemDsupportedDbyDinitialDobservations.
ExperimentalDgroupD-DCORRECTDANSWERD-GroupDwhereDtheDindependentDvariableDisDchanged.
What'sDtheDdifferenceDbetweenDnaturalDselectionDandDgeneticDdrift?D-DCORRECTDANSWERD-
GeneticDdriftDisDrandom.DChangesDinDgeneDfrequenciesDareDNOTDrelatedDtoDtheDgene'sDinfluenceDo
nDreproductiveDsuccess.DNaturalDselectionDisDnotDrandom.DyouDcanDpredictDhowDalleleDfrequencies
DwillDchange.
ObservationD-DCORRECTDANSWERD-InformationDobtainedDthroughDtheDsenses.
6DstepsDofDtheDscientificDmethodD-DCORRECTDANSWERD-
Observation,Dquestion,Dhypothesis,Dprediction,Dexperiment,Dconclusion
What'sDtheDdifferenceDbetweenDanDobservationDandDaDhypothesis?D-DCORRECTDANSWERD-
Observation-
DTheDactionDorDprocessDofDobservingDsomethingDorDsomeoneDcarefullyDorDinDorderDtoDgainDinforma
tion.
Hypothesis-
aDproposedDexplanationDmadeDonDtheDbasisDofDlimitedDevidenceDasDaDstartingDpointDforDfurtherDin
vestigation
, WhatDisDtheDdifferenceDbetweenDaDhypothesisDandDaDscientificDtheory?D-DCORRECTDANSWERD-
ADhypothesisDisDanDassumptionDmadeDbeforeDanyDresearchDhasDbeenDdone.DItDisDformedDsoDthatDitD
canDbeDtestedDtoDseeDifDitDmightDbeDtrue.DADtheoryDisDaDprincipleDformedDtoDexplainDtheDthingsDalre
adyDshownDinDdata
EvolutionD-DCORRECTDANSWERD-
AnyDgeneticDchangeDinDaDpopulation.DEvolutionDoccursDinDpopulationsDnotDinDindividuals.Evolution
D≠DprogressDorDadaptation
WhatDareDtheD4DbasicDmechanismsDthatDcauseDgeneticDchangeDinDpopulations?D-
DCORRECTDANSWERD-Mutation,DgeneDflow(migration),DnaturalDselection,DgeneticDdrift.
PopulationD-DCORRECTDANSWERD-
GroupDofDorganismsDofD1DspeciesDinDtheDsameDareaDthatDcanDbreedDwithDoneDanother.
GeneticDchangeD-DCORRECTDANSWERD-
ShiftDinDtheDfrequencyDofDaDgene(i.e.DpercentageDofDtheDpopulationDwithDthatDgene)
mutationD-DCORRECTDANSWERD-
ItDisDtheDultimateDsourceDofDvariation.DItDisDcausedDrandomlyDbyDchangesDinDDNADsequence•DItsDca
usedDbyDoccasionalDerrorsDinDcopyingDDNAD&DexposureDtoDultravioletDlightDorDspecificDchemicals
GeneDflowD-DCORRECTDANSWERD-
IsDtheDexchangeDofDgenesDbetweenDpopulationsDcausedDbyDmigration.
geneticDdriftD-DCORRECTDANSWERD-
IsDaDrandomDchangeDinDgeneDfrequencies.DNotDrelatedDtoDtheDadvantageDorDdisadvantageDofDtraits
.DSmallDpopulationsDareDaffectedDmoreDthanDlargeDpopulations.DCanDresultDinDdecreasedDdiversityD
andDlossDofDallelesDfromDaDpopulationD(fixation).
Correct Answers 2025
AssumptionD-DCORRECTDANSWERD-
TheyDareDphilosophical,DfoundationalDstartingDpointsDthatDcannotDbeDproven.
ScientificDTheoryD-DCORRECTDANSWERD-
ADhighlyDvalidatedDexplanationDforDphenomena;DappliesDtoDALLDsystems
HypothesisD-DCORRECTDANSWERD-
ADsuppositionDaboutDaDspecificDsystemDsupportedDbyDinitialDobservations.
ExperimentalDgroupD-DCORRECTDANSWERD-GroupDwhereDtheDindependentDvariableDisDchanged.
What'sDtheDdifferenceDbetweenDnaturalDselectionDandDgeneticDdrift?D-DCORRECTDANSWERD-
GeneticDdriftDisDrandom.DChangesDinDgeneDfrequenciesDareDNOTDrelatedDtoDtheDgene'sDinfluenceDo
nDreproductiveDsuccess.DNaturalDselectionDisDnotDrandom.DyouDcanDpredictDhowDalleleDfrequencies
DwillDchange.
ObservationD-DCORRECTDANSWERD-InformationDobtainedDthroughDtheDsenses.
6DstepsDofDtheDscientificDmethodD-DCORRECTDANSWERD-
Observation,Dquestion,Dhypothesis,Dprediction,Dexperiment,Dconclusion
What'sDtheDdifferenceDbetweenDanDobservationDandDaDhypothesis?D-DCORRECTDANSWERD-
Observation-
DTheDactionDorDprocessDofDobservingDsomethingDorDsomeoneDcarefullyDorDinDorderDtoDgainDinforma
tion.
Hypothesis-
aDproposedDexplanationDmadeDonDtheDbasisDofDlimitedDevidenceDasDaDstartingDpointDforDfurtherDin
vestigation
, WhatDisDtheDdifferenceDbetweenDaDhypothesisDandDaDscientificDtheory?D-DCORRECTDANSWERD-
ADhypothesisDisDanDassumptionDmadeDbeforeDanyDresearchDhasDbeenDdone.DItDisDformedDsoDthatDitD
canDbeDtestedDtoDseeDifDitDmightDbeDtrue.DADtheoryDisDaDprincipleDformedDtoDexplainDtheDthingsDalre
adyDshownDinDdata
EvolutionD-DCORRECTDANSWERD-
AnyDgeneticDchangeDinDaDpopulation.DEvolutionDoccursDinDpopulationsDnotDinDindividuals.Evolution
D≠DprogressDorDadaptation
WhatDareDtheD4DbasicDmechanismsDthatDcauseDgeneticDchangeDinDpopulations?D-
DCORRECTDANSWERD-Mutation,DgeneDflow(migration),DnaturalDselection,DgeneticDdrift.
PopulationD-DCORRECTDANSWERD-
GroupDofDorganismsDofD1DspeciesDinDtheDsameDareaDthatDcanDbreedDwithDoneDanother.
GeneticDchangeD-DCORRECTDANSWERD-
ShiftDinDtheDfrequencyDofDaDgene(i.e.DpercentageDofDtheDpopulationDwithDthatDgene)
mutationD-DCORRECTDANSWERD-
ItDisDtheDultimateDsourceDofDvariation.DItDisDcausedDrandomlyDbyDchangesDinDDNADsequence•DItsDca
usedDbyDoccasionalDerrorsDinDcopyingDDNAD&DexposureDtoDultravioletDlightDorDspecificDchemicals
GeneDflowD-DCORRECTDANSWERD-
IsDtheDexchangeDofDgenesDbetweenDpopulationsDcausedDbyDmigration.
geneticDdriftD-DCORRECTDANSWERD-
IsDaDrandomDchangeDinDgeneDfrequencies.DNotDrelatedDtoDtheDadvantageDorDdisadvantageDofDtraits
.DSmallDpopulationsDareDaffectedDmoreDthanDlargeDpopulations.DCanDresultDinDdecreasedDdiversityD
andDlossDofDallelesDfromDaDpopulationD(fixation).