Evolution A population changes over time. Charles Darwin (1809- 1882)
Darwin Evolution Population Evolution Selection.
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Transcript of Darwin Evolution Population Evolution Selection.
- Slide 1
- Slide 2
- Slide 3
- Darwin
- Slide 4
- Evolution
- Slide 5
- Population Evolution
- Slide 6
- Selection
- Slide 7
- Speciation
- Slide 8
- Patterns of Evolution
- Slide 9
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- Slide 10
- What did Darwin call Natural Selection
- Slide 11
- Survival of the Fittest
- Slide 12
- The process where the breeder selects the best trait is called?
- Slide 13
- Artificial Selection
- Slide 14
- What is the name of the book that Darwin wrote?
- Slide 15
- The Origin of Species
- Slide 16
- Hutton & Lylle both said what about the formation of the earth?
- Slide 17
- The earth is millions of years old/the earth was formed by geologic forces
- Slide 18
- The 2 guys that came up with a mathematical equation that can predict allele frequencies?
- Slide 19
- Hardy & Weinberg
- Slide 20
- All of the genes in a population is called?
- Slide 21
- Gene Pool
- Slide 22
- Name 2 sources of genetic variation.
- Slide 23
- Mutations Crossover (Gene Shuffling)
- Slide 24
- Any organ that is reduced in function that may have been used by an ancestor?
- Slide 25
- Vestigial Organ
- Slide 26
- Body structures that are similar in structure and function?
- Slide 27
- Homologous Structures
- Slide 28
- Body structures that are similar in function but different in structure are called?
- Slide 29
- Analogous Structures
- Slide 30
- A trait controlled by more than one gene is called?
- Slide 31
- Polygenic Trait
- Slide 32
- A random change in allele frequencies over the generations is called?
- Slide 33
- Genetic Drift
- Slide 34
- When allele frequencies remain constant it is called?
- Slide 35
- Genetic Equalibrium
- Slide 36
- What occurs when allele frequencies in a group of migrating individuals are by chance not the same as that of the original population?
- Slide 37
- Founder Effect
- Slide 38
- What effect can happen when a populations numbers undergoes a drastic decrease?
- Slide 39
- Bottleneck Effect
- Slide 40
- Where individuals with favorable traits survive & pass on those traits to their offspring?
- Slide 41
- Natural Selection
- Slide 42
- When natural selection favors one extreme phenotype or the other.
- Slide 43
- Directional selection
- Slide 44
- When natural selection doesnt favor either extreme phenotype.
- Slide 45
- Stabilizing selection
- Slide 46
- When natural selection favors both extreme phenotypes.
- Slide 47
- Disruptive selection
- Slide 48
- What are the 5 conditions to maintain genetic equilibrium
- Slide 49
- 1.Must be random mating 2.Must have a large pop. Size 3.No movement of genes 4.No mutations 5.No Natural selection
- Slide 50
- The evolution of a new species
- Slide 51
- Speciation
- Slide 52
- When 2 populations become separated by a geographic barrier (river, mtn. etc)
- Slide 53
- Geographic Isolation
- Slide 54
- When a species doesnt recognize another species as a mate because it didnt do the correct mating dance or call or make the correct display
- Slide 55
- Behavioral Isolation
- Slide 56
- When 2 species mate at different times
- Slide 57
- Temporal Isolation
- Slide 58
- Slide 59
- When members of a population can no longer interbreed with the rest of the population is called?
- Slide 60
- Reproductive Isolation
- Slide 61
- Large scale evolution that takes place over a long period of time
- Slide 62
- Macroevolution
- Slide 63
- What percentage of species that lived on earth have become extinct?
- Slide 64
- 99%
- Slide 65
- Where two or more species originate from one species called a common ancestor.
- Slide 66
- Divergent Evolution
- Slide 67
- Where 2 different species evolve in response to one another.
- Slide 68
- Coevolution
- Slide 69
- What is it called when 2 different species inhabit similar environments and evolve similar traits.
- Slide 70
- Convergent Evolution