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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

Contributors

Changelog