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Evolution of Lifeforms

Across
Early form of an organism from which later forms descend
Process through which species change over time
Any inherited trait that gives an organism an advantage in its environment
Begin separated from other species
The idea that species produce more young than will survive
Natural differences within one species
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
Scientist considered the father of human evolution theory
Down
Extinction of the dinosaurs
Evolution of a new species from an existing species
An early form of an o
Physical structures within an organism that are reduced and unused in its current form
Segment of DNA that relates to a specific trait or function of an organism