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Evolution of Lifeforms

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Across
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Early form of an organism from which later forms descend
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Process through which species change over time
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Any inherited trait that gives an organism an advantage in its environment
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Begin separated from other species
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The idea that species produce more young than will survive
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Natural differences within one species
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The idea that a specific trait that gives a species an advantage will allow it to reproduce and pass that trait on to its young whereas other members of the species without the trait won't survive
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Scientist considered the father of human evolution theory
Down
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Extinction of the dinosaurs
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Evolution of a new species from an existing species
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An early form of an o
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Physical structures within an organism that are reduced and unused in its current form
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Segment of DNA that relates to a specific trait or function of an organism