1. Embryology
And Biochemistry

2. Biology Chapter 12 Section 1c
Objectives:
Recognize that various lines of evidence for evolution exist
Apply knowledge of evolution to organisms (both modern and extinct)
Biology Chapter 12 Section 1c

3. Evidence of Evolution Embryology: the study of how organisms develop
Develop means how the organism changes as it goes from its immature to mature form
Organisms that have similar embryology are related
Many organisms have similar embryology

4. Embryology

5. Biochemistry
Study of composition and structure of organic molecules in cells and organisms
Study of proteins shows similarities in organisms
Similarities indicate closely related organisms

6. Evidence of Evolution
Cellular/molecular evidence: evidence based on the cell
All organisms have cells
All organisms have similar chemicals that make and control the cells

8. Genetic Evidence Compare DNA of organisms (base sequences)
Organisms with similar DNA are more closely related
Timetable of mutations based on rate of mutation can tell when common ancestor existed

9. Genetic Evidence Mutations cause new alleles in population
There is constant change in the alleles of a population
Selective breeding: humans use different alleles and choose those organisms they prefer to modify the gene pool of a population

10. Selective Breeding

11. Selective Breeding

12. Direct Observation
Bacteria live quickly enough that we can observe changes
Drug-resistant bacteria are the result of mutation
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