DNA amp The Genetic Code Fossil Record Strata amp Superposition Relative Age vs Absolute Age Fossil Record Per the theory You would expect older rock to contain mostly organisms that are less complex and less like current living organisms ID: 775914
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Slide1
Slide2Embryonic Development
Slide3Slide4Slide5Vestigial Structures
Slide6Slide7Slide8Slide9Slide10Slide11Slide12Slide13DNA & The Genetic Code
Slide14Slide15Slide16Fossil Record
Strata & SuperpositionRelative Age vs. Absolute Age
Slide17Fossil Record
Per the theory - You would expect older rock to contain mostly organisms that are less complex and less like current (living) organisms
Slide18Slide19Transitional Species in the Fossil Record
Slide20Transitional Species
Slide21Biogeography
The study of the location of living organisms
Slide22Biogeography
Slide23Fitness = ability to make a hereditary contribution to the next generation
Populations Adapt – Individuals Can’t (They acclimatize)
Slide24Explaining things…
(some examples of natural selection at work)
Slide25Convergent Evolution
Slide26Slide27Slide28Slide29Analogous Structures
Similar purpose – different origin
Slide30Divergent Evolution
Adaptive Radiation
Slide31Slide32Homologous Structures
Slide33Slide34Slide35Adaptive Radiation
Slide36Slide37Coevolution
Slide38
Slide39Artificial Selection
Slide40Slide41Sexual Selection
Slide42Relaxed Selection – Backward Evolution?
Slide43Altruism
Slide44Seeing Evolution – Looking at Populations
Slide45Q: How do we see evolution?
A: In populations
Natural Selection acts on populations by changing the composition of the gene pool.
Slide46Gene Pool
Slide47Slide48Population Genetics
Bell Curve – Ding! You’re most likely…looking at average!
Slide49Hardy-Weinberg Equilibrium
No evolution if:
1. No net mutation occurs
2. Individuals do not leave or enter population.
3. The population is large
4. Individuals mate randomly
5. Selection does not occur
Slide50Non-random Mating
Sexual Selection
Slide51Gene Flow
MutationImmigration (In)Emigration (Exit)
Slide52Genetic Drift – small population problems
or founder effect
Slide53Types of Selection
Slide54Directional Selection
Slide55Directional Selection
Slide56Stabilizing Selection
Slide57Stabilizing Selection
Slide58Disruptive Selection
Slide59Disruptive Selection
Slide60Types of Selection
Slide61What is a species?
MorphologyBiological Species Concept
Slide62Gradualism vs. Punctuated Equilibrium
Slide63Gradualism vs. Punctuated Equilibrium
Slide64Extinction