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Changes Time (20 Qs)

TermDefinition
Trait A characteristic that an organism can pass on to its offspring through its genes.
Mutation A change in a gene or chromosome.
Adaptation A trait that helps an organism survive and reproduce.
Environment the surroundings or conditions in which a person, animal, or plant lives.
Variation Any difference between individuals of the same species.
Reproduce to make more of the same kind
natural selection A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.
survival of the fittest Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called natural selection.
favorable traits Traits that enhance an organism's reproductive success.
Unfavorable traits variation of a trait that does not help an organism to survive.
Extinction A species that no longer has any known living individuals.
Galapagos Islands Chain of islands near South America where Darwin developed his theory of natural selection by studying life there.
Evolution Change over time
Fossil Remains of an ancient organism that has been preserved in rock.
fossil record A collection of once living organisms' remains in sedimentary rock layers.
radioactive decay A spontaneous process in which unstable nuclei lose energy by emitting radiation
radiometric dating method used to determine the approximate age of rocks using the rate of decay of radioactive isotopes
genetic sequencing the process of determining the order of base pairs within a DNA molecule
Anatomy The study of body structures
homologous structures structures that are similar in different species of common ancestry
Created by: Mr. Dornfeld
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