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Chapters 15, 16,& 17- Evolution
Terms in this set (18)
Change in a kind of organism overtime; process by which modern organisms have descended from ancient organisms.
Well- tested explanation that unifies a broad range of observations.
Preserved remains or evidence of an ancient organism.
Selection by humans for breeding of useful traits from the natural variation among different organisms.
Struggle for Existence
Competition among members of a species for food, living space, and other necessities of life.
Ability of an organism to survive and reproduce in its environments.
Inherited characteristic that increases an organism's chance of survival.
Survival of the Fittest
Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called natural selection.
Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest.
Descent with Modification
Principle that each living species had descended with changes, from other species over time.
Principle that all living things were derived from common ancestors.
Structures that have different mature forms in different organisms but develop from the same embryonic tissues.
Look and functions similarly but are made up of parts that do not share a common evolutionary history.
Organ that serves no useful function in an organism.
A modification in structure form or function in an organism, differing from other organisms in the share species or group.
Technique in which scientists calculate the age of a sample based on the amount of remaining radioactive isotopes it contains.
Organism in its early stage of development.
Method of determining the age of a fossil by comparing its placement with that if fossils
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