PCBl 4674l Finall Examl Latestl 2026l 2027l

PCBl 4674l Finall Examl (Latestl 2026/l 2027l Update)l Review|l 100%l Verifiedl Questionsl &l Answersl |l Gradel A

Q:l Onel ofl thel mostl excitingl developmentsl inl evolutionaryl biologyl wasl thel discoveriesl ofl Pakicetusl andl Ambulocetus.l Thesel fossilsl werel clearlyl transitionall formsl inl thel evolutionl ofl whatl groupl ofl mammals?a.l Apes b.l Bats c.l Horses d.l Whales

Answer:

d.l Whales

Q:l Whatl allowsl usl tol knowl thatl synapsidsl werel tetrapods?

a.l Theyl livedl onl land.b.l Theyl werel thel dominantl landl animals.c.l Theyl evolvedl intol mammals.d.l Theyl hadl fourl legsl thatl theyl usedl forl walking

Answer:

d.l Theyl hadl fourl legsl thatl theyl usedl forl walking

Q:l Whichl ofl thel followingl phylogeniesl doesl notl indicatel thel samel relationshipl betweenl thel taxal ofl artiodactyls?

Answer:

d.

Q:l Whichl statementl mostl accuratelyl reflectsl whatl populationl geneticistsl referl tol asl fitness? 1 / 4

a.l Fitnessl isl thel abilityl ofl anl organism'sl adaptabilityl tol variousl habitats b.l Fitnessl isl thel numberl ofl matesl eachl individuall ofl thel populationl has c.l Fitnessl refersl tol thel relativel healthl ofl eachl individuall inl al population d.l Fitnessl isl al measurel ofl thel contributionl ofl al genotypel tol thel genel pooll ofl thel nextl generation

Answer:

d.l Fitnessl isl al measurel ofl thel contributionl ofl al genotypel tol thel genel pooll ofl thel nextl generation

Q:l Whichl ofl thel followingl isl NOTl al synapomorphy?

a.l Thel abilityl tol swiml inl dolphinsl andl sharks b.l Thel productionl ofl milkl inl humansl andl cats c.l Thel abilityl tol flyl inl eaglesl andl pigeons d.l Thel layingl ofl eggsl withl shellsl inl snakesl andl lizards

Answer:

a.l Thel abilityl tol swiml inl dolphinsl andl sharks

Q:l Synapomorphiesl amongl al groupl ofl speciesl isl evidencel that: a.l thel speciesl sharel al commonl ancestor b.l thel speciesl arel paraphyletic c.l thel traitsl inl questionl evolvedl independentlyl (convergence) d.l thel traitsl inl questionl originallyl evolvedl forl al differentl functionl (exaptations)

Answer:

a.l thel speciesl sharel al commonl ancestor

Q:l Richardl Lenskil byl allowingl generationsl ofl E.l colil tol reproducel inl flasksl inl al laboratoryl settingl demonstratedl whichl processl ofl evolutionaryl change?a.l naturall selection b.l speciation c.l geneticl drift d.l extinction

Answer: 2 / 4

a.l naturall selection

Q:l Integrativel biologyl (thatl promotesl al betterl understandingl ofl livingl processes)l playsl anl importantl rolel inl ourl understandingl ofl evolution.l Onel scientistl thatl I'vel introducedl youl tol thisl semesterl hasl usedl anl integrativel approachl tol understandl howl thel tetrapodl limbl evolvedl andl his/herl namel is a.l Neill Shubin b.l Rosalindl Franklin c.l Maryl Anning d.l Richardl Lenski

Answer:

a.l Neill Shubin

Q:l Judgingl byl thel phylogeneticl treel thatl follows,l whichl taxal arel mostl closelyl related?

Answer:

d.l Walrusl andl seals

Q:l Whichl fossilsl oftenl tookl thel forml ofl disks,l fronds,l orl blobs?

a.l Prokaryotes b.l Cambrian c.l Stromatolites d.l Ediacaranl fauna e.l Nonel ofl thel above

Answer:

d.l Ediacaranl fauna

Q:l Thel legl ofl anl ox,l al typicall artiodactyl.l Onel synapomorphyl ofl thel artiodactyll lineagel isl thel distinctivel double-pulley-likel morphologyl ofl thel _______.l (B)l showsl thisl bonel inl twol livingl artiodactylsl andl inl twol ancientl membersl ofl thel whalel lineage.a.l Patella b.l Femur 3 / 4

c.l Fibula d.l Astragalus

Answer:

d.l Astragalus

Q:l Geologistsl inl thel nineteenthl centuryl identifiedl rockl layersl aroundl thel worldl andl mappedl theml inl chronologicall orderl (asl seenl above).l Subsequently,l whichl datingl techniquel hasl beenl usedl extensively,l permittingl thel boundariesl betweenl thesel geologicall periodsl tol bel datedl accurately.a.l geomagneticl dating b.l spinl electromagneticl resonance c.l radiometricl dating d.l paleomagneticl dating

Answer:

c.l radiometricl dating

Q:l Al novell influenzal virusl (H7N9l strain)l isl believedl tol bel al resultl ofl al processl calledl viral a.l reassortment b.l loading c.l parthenogenesis d.l mutation

Answer:

a.l reassortment

Q:l Whyl dol Baleenl whalesl stilll havel genesl forl buildingl teeth?

a.l Thesel genesl arel nowl usedl tol makel baleen b.l Theirl ancestorsl hadl teethl andl theyl inheritedl thesel genesl froml them,l evenl thoughl thel genesl nol longerl function c.l Theirl descendantsl mightl needl teeth,l sol evolutionl keepsl thel genesl around d.l Evolutionl can'tl takel awayl genes,l onlyl addl newl ones

Answer:

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