mutation
Random change in DNA molecules making up genes that can yield changes in anatomy, physiology, or behavior in offspring. See mutagen.
Subject:
Chapter 5 - Evolution and Biodiversity: Origins, Niches, and Adaptation
mutagen
Chemical or form of radiation that causes inheritable changes (mutations) in the DNA molecules in the genes found in chromosomes. See carcinogen, mutation, teratogen.
Subject:
microevolution
Small genetic changes a population undergoes. Compare macroevolution.
Subject:
mass extinction
Catastrophic, widespread, often global event in which major groups of species are wiped out over a short time compared with normal (background) extinctions. Compare background extinction, mass depletion.
Subject:
mass depletion
Period of species loss in which extinction rates are much higher than normal but not high enough to classify as a mass extinction. Compare background, extinction, mass extinction.
Subject:
macroevolution
Long-term, large-scale evolutionary changes among groups of species. Compare microevolution.
Subject:
invertebrates
Animals that have no backbones. Compare vertebrates.
Subject:
habitat
Place or type of place where an organism or population of organisms lives. Compare ecological niche.
Subject:
geographic isolation
Separation of populations of a species for long times into different areas.
Subject:
genome
Complete set of genetic information for an organism.
Subject:
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