GMO + evolution Flashcards
Evolution
Change in a kind of organism over time; process in which modern organisms have descended from ancient organisms
Homologous structures
Structures in different species that are similar because of common ancestry but have completely different functions
Common ancestor
The shared ancestor of new, different species that arose from one population
Vestigial structures
- A structure that is found in an organism that no longer served its original purpose
- Evidence of evolution
The two main sources of variation within a species are ____.
Mutations and Sexual Reproduction
Adaptations
A trait that helps a species survive and reproduce
Mutation
A change in a gene or chromosome
Overproduction
Organisms produce more offspring than can survive
Extinction
A species that no longer has any known living individuals
Selective Breeding
The process of selecting organisms with desired traits to serve as parents
Genetic variation
Genetic diversity in a species