evolution
Tags
eco
cegep/3
Word count
106 words
Reading time
1 minute
Changes in the gene pool and adaptations of a population over time
- Responsible for biodiversity
- Slow
- Non-linear
Types:
- Microevolution: changes in allele frequencies
No new species - Speciation: emergence of new species
- Macroevolution: emergence of new groups of species
Evidences
Direct observation
Fossil record
Biogeograpy
Comparative morphology
Comparison of structures and organs between species
[!abstract] vestigial structure
Defective structure that occupies no function, relic of evolution
[!abstract] homologous structure
One of structures with same origin but different functions
[!abstract] analogous structure
One of structures with different origins but same function