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BIOD 210/ BIOD210 Module 1: (Latest 2025/ 2026 Update) Genetics | Questions & Answers| Grade A| 100% Correct (Verified Solutions)- Portage Learning

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BIOD 210/ BIOD210 Module 1: (Latest 2025/ 2026 Update) Genetics | Questions & Answers| Grade A| 100% Correct (Verified Solutions)- Portage Learning QUESTION How does preformation differ from epigenesis? Answer: Preformation postulated that a fertilized egg contained a miniaturized version of a tiny human, called a homunculus. Epigenesis directly contradicted that theory by stating that a fertilized egg undergoes a series of developmental events that eventually form a human. QUESTION What type of plants did Gregor Mendel use in his famous experiments? Answer: pea plants QUESTION The chromosomal theory of inheritance states that: Answer: Genes, contributed from each parent, are carried on chromosomes. QUESTION True or False: Nucleotides are the basic building blocks that make up DNA. Answer: true QUESTION Explain how the use of biotechnology has contributed to modern agriculture. Answer: Transgenic plants have been engineered to resist insects and harsh environments, grow bigger and more prolifically, or to enhance nutrition. QUESTION True or False: The theory of spontaneous generation posits that living things can spontaneously generate from nonliving things. Answer: true QUESTION Natural selection posits that organisms that have the most advantageous characteristics will survive their environment. Do humans have the same selective pressures for natural selection that their animal counterparts do? Are humans still evolving? Answer: Modern humans have overcome the survival barriers that most animals face. They (typically) do not face harsh environments or predators because of their ability to shelter; they do not need to hunt or gather for food because there are markets; they have equipment and clothing to help them to be strong, to climb, etc. So, humans do not face the same selective pressures that other animals do for survival. That being said, they do continue to evolve. Genetic mutations occur within populations that may be slightly advantageous to a certain lifestyle (eg evolving the ability to digest milk even into adulthood), and these mutations may be selected for within a population. So, evolution occurs even though it is no longer a true "natural selection" for survival. QUESTION Cell theory was introduced by: Answer: Matthias Schleiden and Theodor Schwann QUESTION Charles Darwin's publication on evolution is called: Answer: the origin of species

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BIODl 210/l BIOD210l Modulel 1:l (Latestl
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:

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