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Common Descent The Principle of Mr. Sapora Evolution Learning Target #6
| Date post: | 13-Jul-2015 |
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Common DescentThe Principle of
Mr. Sapora
EvolutionLearning Target #6
“I think...” What does Darwin’s mechanism for evolution suggest about living and extinct species?
Every organism alive today is descended from parents who
survived and reproduced.
Fossil Record evidence
Deep Time = enough time to explain all life related = enough time to explain all life related
Descent with Modification
Living species are descended, with
modification, from common ancestors.
Tree of Life
Common Descent on the Tree of Life (the animal branch)
Modern Tree of LifeThank you DNA!Thank you DNA!
one in a million
orone out of million...
Where do we fit?
Where do we fit?
