1. Bio Do Now Get out natural selection lab
Question: What are things your would look for to tell if two people were related?

2. Evidence for evolution
Anatomical Evidence
Similar structures
Use of fossil record
Genetic Evidence
Similar DNA sequences, genes, chromosomes, amino acid sequences, protein sequences

3. Homologous structures
Features with same basic structure, same relationship to other features, and same development
Why might this indicate a shared relationship?

4. Analogous structures
different structures with the same function, evolved separately

5. Vestigial structures
remnants of organs or structures that were important in ancestors, but not as important now

6. Question
Why are the wings of insects and birds analogous and not homologous?
What would you need to know to determine if two structures are homologous or analogous?

7. Embryology Guess the embryo game
Embryos have similar features- the more similar their development, the more closely related they are
Guess the embryo game

8. Fossil Record Remains or impressions of extinct animals
Study of fossils = paleontology
The position and location of fossils helps us to understand patterns of organisms from ages past
Some transitional fossils may show relationships between types of species.