1. Week 12 Vocab Definitions

2. Biogenesis
Life from living
Abiogenesis
Life from non-living
Evolution
The change in populations over time.

3. Natural selection
Individuals with the best traits survive and reproduce and pass those traits onto their offspring
Analogous structures
Structures that have a similar function but a different evolutionary origin.
Homologous structures
Structures that may have different mature forms, but arise from the same origin in a common ancestor.

4. Vestigial structures
Residual body organs that once had a use, but no longer do because of evolution.
Adaptive radiation
An ancestral species gives rise to many new species to fit a number of diverse habitats.

5. Gradualism
New species originate through slow changes in adaptations.
Punctuated equilibrium
New species originated in rapid bursts with long periods of equilibrium in between.