Amoeba Sisters: Natural Selection

Prokaryotic cells in your body are __________.

• bacteria

• cancer

• somatic cells

• white blood cells

What are the tow activites listed in this video that species are able to do?

• They can breed with each other

• They can pass down their genetics(DNA) to their offspring.

• They can both breed and pass down their genetics (DNA) to their offspring.

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the frogs have a variety of traits like being darker or lighter green. This is evidence of...

• selective pressure

• inbreeding

• genetic diversity

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The darker fogs breeding and producing offspring while the lighter frogs are not (because they are dead) is evidence of...

• genetic diversity

• natural selection

• selective pressure

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Biological fitness is determined by _______

• how long the organism lives

• how many offspring the organisms have.

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Natural Selection is a mechanism of evolution. Can this mechanism produce a change in an individual, an entire population, or both?

• Natural selection only impacts an individual organism and does not impact the entire population.

• Natural Selection direction impacts only the entire population

• Both, because it will impact each individual, but eventually that change will ilead to evolution of the entire population.

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What trait color do the alleles (genes) Gg produce?

• Dark Green

• Light Green

• Yellow

• Red

If the same selective pressures (color of habitat and predators) stay the same, what will happen?

• The lighter colored frogs will become more and more common in the population.

• The lighter colored frogs will still be at a disadvantage.

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A variation that has a positive effect will make an individual more likely to survive and reproduce.

• fase

• true

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The resistant bacteria are able to survive and reproduce (a lot...very quickly) and the other bacteria cannot reproduce (because they are dead). This is evidence of

• selective pressure

• increased biological fitness due to natural selection

• genetic diversity

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