2025/l 2026l Update)l Geneticsl |l Questionsl
&l Answers|l Gradel A|l 100%l Correctl
(Verifiedl Solutions)-l Portagel Learning
Q:l Howl doesl preformationl differl froml epigenesis?l
Answer:
Preformationl postulatedl thatl al fertilizedl eggl containedl al miniaturizedl
versionl ofl al tinyl human,l calledl al homunculus.l Epigenesisl directlyl
contradictedl thatl theoryl byl statingl thatl al fertilizedl eggl undergoesl al seriesl
ofl developmentall eventsl thatl eventuallyl forml al human.
Q:l Whatl typel ofl plantsl didl Gregorl Mendell usel inl hisl famousl
experiments?l
Answer:
peal plants
Q:l Thel chromosomall theoryl ofl inheritancel statesl that:l
Answer:
Genes,l contributedl froml eachl parent,l arel carriedl onl chromosomes.
,Q:l Truel orl False:l Nucleotidesl arel thel basicl buildingl blocksl thatl makel upl
DNA.l
Answer:
true
Q:l Explainl howl thel usel ofl biotechnologyl hasl contributedl tol modernl
agriculture.l
Answer:
Transgenicl plantsl havel beenl engineeredl tol resistl insectsl andl harshl
environments,l growl biggerl andl morel prolifically,l orl tol enhancel nutrition.
Q:l Truel orl False:l Thel theoryl ofl spontaneousl generationl positsl thatl livingl
thingsl canl spontaneouslyl generatel froml nonlivingl things.l
Answer:
true
Q:l Naturall selectionl positsl thatl organismsl thatl havel thel mostl
advantageousl characteristicsl willl survivel theirl environment.l Dol humansl
havel thel samel selectivel pressuresl forl naturall selectionl thatl theirl animall
counterpartsl do?l Arel humansl stilll evolving?l
Answer:
, Modernl humansl havel overcomel thel survivall barriersl thatl mostl animalsl
face.l Theyl (typically)l dol notl facel harshl environmentsl orl predatorsl becausel
ofl theirl abilityl tol shelter;l theyl dol notl needl tol huntl orl gatherl forl foodl
becausel therel arel markets;l theyl havel equipmentl andl clothingl tol helpl theml
tol bel strong,l tol climb,l etc.l So,l humansl dol notl facel thel samel selectivel
pressuresl thatl otherl animalsl dol forl survival.l Thatl beingl said,l theyl dol
continuel tol evolve.l Geneticl mutationsl occurl withinl populationsl thatl mayl bel
slightlyl advantageousl tol al certainl lifestylel (egl evolvingl thel abilityl tol digestl
milkl evenl intol adulthood),l andl thesel mutationsl mayl bel selectedl forl withinl
al population.l So,l evolutionl occursl evenl thoughl itl isl nol longerl al truel
"naturall selection"l forl survival.
Q:l Celll theoryl wasl introducedl by:l
Answer:
Matthiasl Schleidenl andl Theodorl Schwann
Q:l Charlesl Darwin'sl publicationl onl evolutionl isl called:l
Answer:
thel originl ofl species
Q:l Proposel examplesl ofl certainl traitsl thatl couldl benefitl al mammall thatl
livesl inl al mountainousl environment.l
Answer: