Download Evidence Evolution Notes

Evolution: Evidence for Evolution
Evidence for Evolution
1. __________________________
2. __________________________
3. __________________________
4. __________________________
Fossils
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Fossils are the ______________ of organisms that lived in the past.
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Usually found in ______________________ rock
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Can be relatively _______________ by their ______________ in the rock ___________ (strata).
o Law of __________________________: The __________ the layer, the _________ the fossil in
it is.
The Fossil Record
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The fossil record provides _______________ of the past that illustrate evolutionary _____________.
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The picture may be smudged in places and may have bits _______________, but fossil evidence clearly
shows that life has _______________ over time.
Transitional Fossils
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Fossils that show the ____________________ states between an _______________ form and its
_____________________.
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There are numerous examples of transitional forms in the fossil record, providing __________________
for ____________ over time.
Evolution of the Whale
Anatomy
Two types of anatomical structures:
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__________________ ______________________ body parts of different organisms that have similar
structures, evolutionary ______________ and patterns of _____________________.
o They indicate relationships ________________ living forms
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____________________ structures are body parts of ________________ organisms that have similar
______________
o But are different in _________________ and ______________
Homologous Structures
Analogous Structures
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The ________________ on a bat’s wing and a dragon fly’s _________.
Vestigial Structures
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___________________ structures have no __________________.
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An organ that is _______________ in a living organism was ________________ by some
_________________ of that organism
Examples of Vestigial Structures
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The human _________________ – much larger in __________ eating animals.
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_________ in blind fish – develop than begin ________________.
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The human ______________ (___________) – remnants of a _______
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____________ of flightless birds - useless for _________ such as the Ostrich and Emu
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_________ in a whale
o Remnants from a _________ legged, _________ dwelling ancestor.
Embryology
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The early stages of _____________________ of many animals with backbones are so
__________________ that they can be hard to tell apart.
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The same group of ____________________ cells develop in the same __________ and in similar
____________.
Biochemistry
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All living cells show a basic similarity in their _____________
o All cells use ___________ in the storage and transfer of ______________
o All cells store _________________ information in the form of ______________ _________
o All living cells contain specialized ________________ called _____________
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The more closely ______________ two organisms are, the more similar their cell _______________ is.
o Therefore, ____________ related species will have _____________ DNA sequences.