Evidence For Evolution Flashcards
Evidences:
1) fossil records
2) comparative anatomy
3) comparative embryology
4) molecular biology
5) biogeography
A record of the history of life on Earth
Fossils
Missing link between reptiles and birds
Archaeopteryx
They discovered fossils of many transitional forms
Paleontologists
View of life that predicts evolutionary transitions should leave signs in fossil records
Darwinian View of life
Structures under comparative anatomy
1) Homologous
2) Analogous
3) Vestigial
Superficial similarities that reflect an adaptation reflective of similar environments.
Not a descent from a common ancestor
Analogous Structures
Anatomical resemblances between organisms that represent variations on a structural theme that was present in a common ancestor
Homologous Structure
Remnants of structures that served important functions in the organism’s ancestors
Vestigial Structures
Leftover traces of evolution that serve no purpose
Vestigial organs
Closely related organsims go through similar stages in their embryonic development
Embryology
T or F
All vertebrae embryos go through a stage in which they have gill pouches and tails
T
The use of geography to describe the distribution of species
Biogeography
After Pangea separated, similar species diverged due to different environments
Divergent evolution
Related species from different regions around the world converge or begin to look alike when found in similar
Convergent evolution