Download evidence of evolution

EVOLUTION
Reference:
CK-12 9.1/9.2
What did Redi and Pasteur conclude from their experiments?
What is the theory of biogenesis?
What are some theories about the origin of life?
1.
3.
2.
4.
endosymbiont theory –
Reference:
CK-12 10.1
 Who comes to mind when you hear ‘evolution’? _________________________________
Brief summary of his findings:
 what’s the difference between artificial and natural selection?
evolution can be defined as:
4 principles of natural selection:
1.
2.
3.
4.
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EVOLUTION
Reference:
CK-12 10.2
evidence of evolution:
1. fossil record –
 _________________________________ - newly evolved features that do not appear in fossils of
common ancestors
 _________________________________ - features that do show up in fossil records
 _________________________________ - intermediate forms between older species and more
modern descendants.
2. anatomy –
 _________________________________ - structures similar to those from possible ancestor
 _________________________________ - structures that were once homologous but now have
little or no function
 _________________________________ - structures used for the same purpose but not inherited
from a common ancestor
 _________________________________ - early, pre-birth stage of an organism
3. biochemistry –
4. geographic distribution –
adaptation –
 why don’t dominant alleles just take over the recessive alleles?
Reference:
CK-12 10.3
5 conditions for genetic equilibrium  Hardy-Weinberg
Condition:
Why this isn’t usually the case…
1
2
3
4
5
Can a population actually be in genetic equilibrium?
Yes
No
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EVOLUTION
Mechanisms that cause evolution:
1. genetic drift –
a. founder effect
b. bottleneck effect
2. gene flow
3. __________________________________
4. __________________________________
5. natural selection
6. __________________________________ (can result from reproductive isolation)
What a population would ideally look like:
Types of natural selection:
1. _____________________________ selection
a. explain:
2. _____________________________ selection
a. explain:
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EVOLUTION
3. _____________________________ selection
a. explain:
4. _____________________________ selection
a. explain:
Speciation –
1. allopatric speciation –
Reference:
CK-12 10.4
2. sympatric speciation –
patterns of evolution:

adaptive radiation –

coevolution –

convergent evolution –
2 theories of what affects the rate of speciation:

gradualism –

punctuated equilibrium –
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EVOLUTION
Review Questions:
MULTIPLE CHOICE: Circle the letter of the ONE BEST answer that completes the statement.
1. Structures that have different mature forms, but develop from the same embryonic structure are called
_______________ structures.
A. Darwinian
B. Lamarckian
C. homologous
D. fossils
2. Because of its similarities to artificial selection, Darwin referred to the “survival of the fittest” as
__________________________,
A. use it or lose it
B. natural selection
C. homologous structures
D. struggle for existence
3. When farmers select the largest hogs, the fastest horses, or the cows that produce the most milk for
breeding it is called ________________.
A. natural selection
B. artificial selection
C. survival of the fittest
D. homologous variation
4. An inherited characteristic that increases an organism’s ability to survive and reproduce in its specific
environment is called a(n) __________________.
A. homologous structure
B. vestigial organ
C. adaptation
D. speciation
5. A human appendix, whale hipbones, and a snake’s legs are examples of _________________
A. homologous structures
B. embryonic mates
C. vestigial structures
D. comparative embryology
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