Evolution Flashcards
Fossil
When a prehistoric organisms remains are impressed into rock over long periods of time
Homologous part
Modified structures that came from a common ancestor
Vestigial structures
- Structures that don’t hAve a function
- May be homogolous with useful structures in other organisms
Selective breeding
Humans pick plant and animal breeding for a special phenotype trait
Natural selection
The best individual will survive longer with the better trait
Competition
Competition between organisms in which the fitness of another is lowered
Variation
Rains in different organisms that make them unique from each other
Adaptation
Animals evolve as certain variations increase, decrease in a population
Species
Group of organisms that breed and produce offspring in nature
Geological isolation
Environmental variations for two areas will be different and naturally selected
Speciation
Evolution if a new species
Genetic drift
Variation in a relative frequency of different genotypes in a small population
Convergent evolution
When different organisms that aren’t related develop the same traits based off of living in the same environment
Gradualism
Slow and steady changes
-happens with environment is stable
Punctuated equilibrium
Long periods of very little change
To
Quick periods of fast change
(Sudden change in environment)