Evolution Review

A mutation is

• always bad

• always good

• a change in DNA

• a change due to environmental influences

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A trait that can be passed on to future generations that increases an organism's ability to survive is called

• adaptation

• fitness

• variation

• evolution

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Ladybugs can come in many colors. In this imaginary scenario I'm inventing, only two little red ladybugs ended up on a ship to a formerly ladybug free island. The red ladybugs had lots of ladybug babies and now the island only has red ladybugs. What is the correct term for this random event?

• Natural Selection

• Artificial Selection

• Random Modification

• Genetic Drift

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Select all that are (only) influenced by humans (more than one answer possible)

• Natural Selection

• Artificial Selection

• Genetic Modification

• Genetic Drift

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An event occurs that causes an individual (let's call him Fred) to suddenly not be well suited to its environment. What will happen to Fred?

• Fred will soon be dead

• Fred will evolve

• Fred will rapidly adapt to fit his new environment

• Fred will mutate to fit the environment and pass on genes, leading to a new species

Answer explanation

Organisms do not spontaneously adapt or evolve. If they are not suited to the environment,they need to leave to find an environment they ARE suited to, or they will die. The non-fit ones die off and do not pass on the "not-fit" genes.

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When one species outcompetes another that is competing for the same resource and thus reduces the number of individuals In that environment

• natural selection

• competitive exclusion

• resource partitioning

• survival of the fittest

When two or more species divide up a resource so they can both thrive in an environment

• natural selection

• competitive exclusion

• resource partitioning

• survival of the fittest

When does natural selection happen the fastest in nature?

• when there is a large change to the environment

• when the species are most closely related to eachother

• when there are little to no mutations happening

• when there is very little genetic diversity

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In a cooling environment, which species will have the best chance for survival?

• the one with the smartest individuals

• the one with the smallest body size

• the one with the most genetic variation

• the one with the largest population

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What is speciation?

• when a population reaches a balance and change is no longer occuring

• when populations move away from each other

• when species begin to pass on acquired traits and change their behavior

• when two species can no longer interbreed

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