Evidence for Evolution
A piece of the past preserved over time
What are fossils?
Change over time
What is evolution?
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The best genes survive and reproduce is known as
What is natural selection?
This is how you tell if two organisms are two different species.
What is interbreed and have babies?
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When a branch doesn’t reach the top of the cladogram its called
What is extinct?
Scientists can compare this molecule to see how closely living things are related to each other?
What is DNA?
An advantage to survive and reproduce
What is a reproductive advantage?
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This can cause populations to change over time by humans choosing traits they want.
What is Artificial Selection?
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This is the physical separation of two populations.
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This is the species that is LEAST related to the others
What is the Out Group?
These structures have similar bones but different functions
What are Homologous structures?
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A change in DNA
What is a mutation?
This cause of evolution is where an organism chooses a mate due to physical characteristics
What is Sexual Selection?
This type of isolation is identified as two populations mating at different times, so the gene pools will not mix.
What is Reproductive Isolation?
The "node" or intersection on a cladogram.
What is the common ancestor?
The percentage amount of DNA that humans share with bananas
What is 50%?
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This is known as differences in a population and is necessary for populations to adapt to changes in the environment
What is Variation?
Something that picks causes one trait to survive over another, an example is the wind, a predator, volcano
What is a selective force?
A horse and a donkey create a mule. They are considered different species because of what?
The mule cannot reproduce so the two populations are still isolated.
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This literally means "living earth picture" where scientists look at the similarities of different species around the world
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Give an example of a homologous structure...
This cause of evolution randomly causes new traits to appear and add variation to a population.
What is a Mutation?