.png){kind=logo}
PCBl 4674l Examl 1l (Latestl 2026/l 2027l Update)l Guide|l 100%l Verifiedl Questionsl &l Answersl |l Gradel A
Q:l comparativel embryologyl allowedl forl twol linesl ofl thinking
Answer:
1.l evidencel ofl commonl ancestryl andl 2.l embryosl gol throughl theirl evolutionaryl hxl duringl developmentl (FALSE)
Q:l homologousl structuresl arel usefull forl determiningl evolutionaryl relatednessl because
Answer:
itl meansl itl wasl presentl inl commonl ancestor
Q:l examplel ofl platel fragmentl animal
Answer:
madagascarl speciesl suchl asl lemurs,l boas,l elephantl birds
Q:l examplel ofl oceanicl islandsl animal
Answer:
Galapagosl birds
Q:l examplel ofl continentall islandl animals
Answer: 1 / 3
Galapagosl tortoise
Q:l adaptivel radiationl isl when
Answer:
al singlel speciesl rapidlyl diversifiesl intol manyl speciesl thatl occupyl differentl niches
Q:l examplel ofl comparativel embryologyl (2)
Answer:
pharyngeall pouchesl andl tail
Q:l Darwinl didl notl thinkl itl wasl possiblel tol observe
Answer:
divergencel andl speciationl happeningl inl reall time,l BUTl EVOLUTIONl CANl HAPPENl QUICKLYl ANDl BEl OBSERVEDl EX.l evolutionl ofl gall-producingl insectsl onl plants
Q:l examplel ofl howl al traitl canl bel homologousl andl analogous
Answer:
onel placentall andl onel marsupiall molel havel similarl spade-likel frontl legsl (forelimbs)l duel tol commonl ancestorl andl theyl bothl likel tol burrow
Q:l Darwinl incorporatedl populationl thinkingl intol hisl ideasl because
Answer:
naturall selectionl isl anl explicitlyl (populationl basedl idea)
Q:l Darwinl incorporatedl treel thinkingl intol hisl ideasl because
- / 3
Answer:
speciesl arel relatedl tol onel anotherl throughl ancestor/descendentl relationships
Q:l typologicall thinkingl isl when
Answer:
therel isl anl ideall type,l andl anyl variationl isl error
Q:l inl populationl thinking,l individualsl existl asl partsl of
Answer:
populations
Q:l examplel ofl patternl (outcome)l inl evolution
Answer:
fossils,l analogous/homologousl structures,l variation
Q:l examplel ofl processl inl evolution
Answer:
naturall selection,l divergence,l genel flow
Q:l finchesl withl largerl beaksl makel more
Answer:
BMP4l mRNAl (signalingl moleculel akal growthl factor)
Q:l differentl finchl speciesl varyl inl when/where/howl stronglyl BMP4l isl activatedl whichl contributesl to
- / 3
.png)