Biology - Unit 7 Evolution Practice

True or False: Evolution occurs due to inheritance of acquired characteristics, meaning that organisms try their best to adapt during their lifetime and then they pass their adaptations down to their offspring.

• TRUE

• FALSE

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TRUE OR FALSE: Evolution occurs because some individuals are born with mutations that make them better adapted, so they are more likely to survive and pass their traits down to their offspring.

• TRUE

• FALSE

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The idea that some individuals are born with mutations that make them better adapted, so they are more likely to survive and pass their traits down to their offspring.

• Lamarckianism

• Inheritance of Acquired Traits

• Natural Selection

• Genetic Drift

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The ability of an organism to survive and reproduce in its environment

• Fitness

• Strength

• Survivability

• Growth

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The emergence of a new species due to evolution:

• Adaptation

• Lamarckianism

• Expulsion

• Speciation

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A group of organisms that ARE capable of interbreeding with each other (reproducing with each other) and producing fertile offspring

• Kingdom

• Species

• Horde

• Cornucopia

Any trait that helps an organism survive and reproduce in its environment -- will likely get passed down to offspring due to natural selection

• Feature

• Adaptation

• Inherited Characteristic

• Tool

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TRUE OR FALSE: for two populations to evolve into separate species, there must be NO GENE FLOW between the two populations (meaning the two populations can't be interbreeding or reproducing together)

• TRUE

• FALSE

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When their is no gene flow between two populations, we say the populations are:

• reproductively favored

• Independent

• reproductively isolated

• well-adapted

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The reason two different species can't reproduce together is often due to:

• chromosome differences

• appearance differences

• differences in taste

• different locations

Answer explanation

Species evolve due to mutations in their DNA (chromosomes). After enough mutations have occurred, if two populations are reproductively isolated for long enough, their DNA/chromosomes will no longer be compatible and they will not be able to interbreed/reproduce with each other, even if the two populations are brought back together (no longer isolated)

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