Forces that drive evolution

1

• Forces that drive evolution
• Inheritance
• Random Genetic Change
• Natural Selection
• Genetic drift
• Migration
• Etc.

2

• Forces that drive evolution
• Inheritance
• Random Genetic Change
• Natural Selection
• Genetic drift
• Migration
• Etc.

3
Genetic Drift Is Random
4
Genetic Drift Is Random
5
Aa
Aa
aa
aa
aa
aa
aa
aa
aa
aa
aa
6
Founder Effect
7
(No Transcript)
8
(No Transcript)
9
(No Transcript)
10
Bottleneck
11
(No Transcript)
12
(No Transcript)
13
(No Transcript)
14
(No Transcript)
15
(No Transcript)
16
(No Transcript)
17
If Founder effect or bottleneck is due to genetic
advantage, then is Natural Selection and NOT
Genetic Drift
18

• Forces that drive evolution
• Inheritance
• Random Genetic Change
• Natural Selection
• Genetic drift
• Migration
• Etc.

19
(No Transcript)
20
(No Transcript)
21
(No Transcript)
22
Speciation
23
Biological Species
Viable/Fertile Offspring
24
Speciation requires genetic isolation
25
(No Transcript)
26

• Isolating mechanisms
• Premating/Prezygotic
• Postmating/Postzygotic

27

• Isolating mechanisms
• Premating/Prezygotic
• Postmating/Postzygotic

28
(No Transcript)
29
(No Transcript)
30

• Isolating mechanisms
• Premating/Prezygotic
• Postmating/Postzygotic

31
(No Transcript)
32
(No Transcript)
33
(No Transcript)
34
Wild Populations
Blue and Gold Macaw
Scarlet Macaw
35
Captive Animals
Blue and Gold Macaw
Scarlet Macaw
Catalina Macaw
36
(No Transcript)
37
platensis
oregonensis
xanthoptica
croceater
croceater
eschscholtzi
klauberi
38

• Speciation Events
• Allopatric speciation
• Sympatric speciation
• Parapatric speciation

39

• Speciation Events
• Allopatric speciation
• Sympatric speciation
• Parapatric speciation

40
(No Transcript)
41
(No Transcript)
42
(No Transcript)
43
(No Transcript)
44
(No Transcript)
45
(No Transcript)
46
?
47
(No Transcript)
48
(No Transcript)
49
(No Transcript)
50
(No Transcript)
51
(No Transcript)
52
(No Transcript)
53

• Speciation Events
• Allopatric speciation
• Sympatric speciation
• Parapatric speciation

54
(petiolaris, annuus)
55
Utah Sunflower Population
56
Wild Populations
?
57
Experiment
58
(No Transcript)
59
(No Transcript)
60

• Speciation Events
• Allopatric speciation
• Sympatric speciation
• Parapatric speciation

61
Tailing field
62
Tailing field
63
Tailing field
64
Other Topics and Supporting Evidence
65
The Fossil Record
66
Punctuated Equilibrium
67
Adaptive Radiation
68
Microevolution vs Macroevolution
69
Lobe finned fishes
70
(No Transcript)
71
Lobe finned fishes
Amphibian-like fishes
Fish-like amphibians
72
(No Transcript)
73
Lobe finned fishes
Amphibian-like fishes
Fish-like amphibians
Amphibians
Reptile-like amphibians
Amphibian-like reptiles
Reptiles
Etc.
74
Developmental Homology Evo-Devo
75
Ontogeny recapitulates phylogeny
76
Behavioral Homology
77

• Morphological Homology
• Molecular homology
• Fine anatomy
• Gross anatomy