Evidence of Evolution – Study Guide | Study Guide

University:
California State University, Chico
Course:
CHEM 270 | Organic Chemistry I
Academic year:

2025
Views:

144

Pages:

1
Author:

Max Freuman

Evidence of Evolution – Study Guide 1. Fossil Record Shows how organisms changed over time. Older fossils are simpler; newer ones are more complex. Transitional fossils link species. 2. Homologous Structures Same structure, different function (e.g., human arm, whale fin). Indicates common ancestry. 3. Analogous Structures Different structure, same function (e.g., bird vs insect wings). Does NOT indicate common ancestry. 4. Vestigial Structures Body parts with little or no function (e.g., appendix). Remnants of ancestors. 5. DNA Evidence Similar DNA means organisms are closely related. Humans share ~98–99% DNA with chimpanzees. 6. Embryology Similar embryo development suggests common ancestry. 7. Biogeography Distribution of species based on location; isolation leads to different evolution. Memory Trick: F H A V D E B Common Quiz Questions: - Which show common ancestry? Homologous, DNA, embryos - Which does NOT? Analogous - Vestigial structures? Leftover parts - Fossil record shows? Change over time