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Ch.15 Evolution

Darwin's Theory

QuestionAnswer
Process by which modern organisms have descended from ancient organisms Evolution
Well-tested explanation that unifies a broad range of observations Theory
Preserved remains or evidence of an ancient organism Fossil
Selection by humans for breeding of useful traits from the natural variation among different organisms Artificial selection
Competition among member of a species for food, living space, and the other necessities of life Struggle for existence
Ability of an organism to survive and reproduce in its environment Fitness
Inherited characteristic that increases an organism's chance of survival Adaptation
Process by which individuals that are better suited to their environment survive and reproduce most successfully; natural selection Survival of the fittest
Process by which individuals that are better suited to their environment survive and reproduce most successfully; survival of the fittest Natural selection
Principle that each living species has descended, with changes, from other species over time Descent with modification
Principle that all living things were derived from common ancestors Common descent
Structures that have different mature forms in different organisms but develop from the same embryonic tissues Homologous structures
Organ that serves no useful function in an organism Vestigial organ
Created by: Hagi131096
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