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Evolution- Shamrell

Evolution & Change

TermDefinition
evolution change over time
population a group of the same species that live in the same place at the same time
species a group of organisms that can interbreed with each other
variations differences among individuals within a population or species
mutation change in the DNA sequence that creates more variation in a population
trait characteristic of an organism
heritable something that can be passed on to offspring
adaptation trait that improves and organism's chance to survive and reproduce
fitness measure of an organism's ability to survive and reproduce
speciation the formation of a new species due to separation of a population into two groups that can no longer reproduce
niche role and position a species has in its environment; the job of an organism
fossil the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
comparative anatomy the study of similarities and differences in the body structure of different species.
natural selection the process where organisms that are better adapted to their environment tend to survive and produce more offspring
artificial selection when humans selectively breed organisms to produce offspring with more desirable traits
homologous the same or similar
resistance the ability not to be affected by something; immune
camouflage The hiding of something as a result of its appearance
gene pool Combined genetic information of all the members of a particular population.
Created by: Mrs. Shamrell
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