- Slow process of change in organisms over long period of time. → evolution
- A group of organisms share a most recent common ancestor. → common descent
- Transfer of alleles from one population to another through migration of individuals. → gene flow
- A change or the process of change by an organism or species becomes better suited to its environment. → adaptation
- A type of natural selection arising through preference by one sex for certain characteristics in individuals of the other sex. → sexual selection
- A feature that was an adaptation for the organism's ancestors, but that evolved to be non-functional because the organism's environment changed. → vestigial structure
- The process in which new species evolve usually as a result of isolation from the main population. → speciation
- Reduces reproductive success in a proportion of a population that do not have adaptive traits. → selective pressure
Parent Tip: Review the logic above to help your child master the concept of evolution worksheets.
