Amoeba Sisters Video Recap: Natural Selection
1. Populations can have variety, despite being made up of
the same species. If a population has different expressed
traits, this can be due to different inherited alleles. The
frogs below are the same species, but they have different
shades of green based on their inhe rited alleles. In a
particular environment, lighter green frogs are easier to see
by predators. Explain how natural selection could lead to a
change in allele frequency .
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2. Natural selection is an example of a mechanism of
evolution. Does this mechanism produce a change in
individuals or populations? Explain!
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3. A major point of understanding natural selection is that not all organisms in a
population get to reproduce. Consider the term fitness as u sed in bio logy. How does
this term relate to natura l selection?
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4. Based on your answer above, do organisms with higher fitness mean that they have survived to an advanced age? Why
or why not?
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BrielJim
Thefrogsthatsurvivewill
passtheir Populations because it makes
traitsto theiroffspring
and
overtimeonly aneffect on all of them
the
frogswiththehighestsurvivalrate
willremain
It relates to the number ofoffspringproduced
Nobecause it means they produced even mere offspring
