7.5 Evidence of Common Ancestry and Evolution
in AP Biology
Biogeography provides information about the evolutionary history of organisms, specifically where they originated and how they were able to disperse.
To Think About:
What evidence supports evolution? How are fossils dated? How do morphological homologies provide evidence for common ancestry? How do fundamental molecular and cellular features shared across all domains of life provide evidence of common ancestry? What evidence supports relatedness of organisms in all domains? What structural evidence supports common ancestry of all eukaryotes?
Watch: AP Daily Video Evidence for Evolution
Answer the Following Questions:
- What is the difference between an extant and extinct species?
- What are some ways fossils can be dated?
- Morphological traits represent __________
- What are the differences between homologous structures, vestigial structures, and analogous structures?
- List the three pieces of biochemical evidence discussed in the video:
- The more amino acid differences in a protein shared by different species, the ____________ time has passed since their divergence.
Watch: AP Daily Video Common Ancestry
Answer the Following Questions:
- List three types of structural evidence supports common ancestry of all eukaryotes.
- What are the structural similarities of chloroplasts and mitochondria?
- What is the endosymbiotic theory?
- How are eukaryotic genomes different from prokaryotic genomes?
- Eukaryotic genes contain ____________ but prokaryotic genes do not.
Supplementary Resources:
- Bozeman Science: Mr. Andersen’s “Evidence for Evolution” video
- Bozeman Science: Mr. Andersen’s “Essential Characteristics of Life” video
- Crash Course Biology: Evolution: It’s a Thing
- BBC’s GCSE Bitesize Biology: Evidence for Evolution
