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Chapter 14

Speciation

TermDefinition
classify to group
mammary gland a milk-producing structure on a mammal
morphology the study of differences in body forms of organisms
biochemistry chemistry that deals with the chemical compounds and processes in organisms
fertile capable of producing offspring
reproductively isolated a division between populations that once mated, but can no longer mate and produce fertile offspring
interbreed to breed together
biological species concept a principle that defines a species as populations that can interbreed and produce offspring
asexual reproduction reproduction that involves one parent and no egg or sperm
ecological species concept a principle that defines species as populations that can interbreed and produce offspring based on their niche
niche the way of life of a species
subspecies a division of a species
allopatric speciation when similar organisms do not interbreed due to physical barriers
sympatric speciation when similar organisms live nearby, but do not interbreed due to differences in behavior
subpopulation a division of a population
genus a group of similar species
kingdom a group of similar phyla or divisions
phylum a subdivision of the animal kingdom
division a subdivision of the plant kingdom
three-domain system a system that classifies all living things into three broad groups
archaea the domain of prokaryotic organisms that are not bacteria
eukarya the domain of eukaryotic organisms
stasis showing little change over time
punctured equilibrium a theory that states species stay the same for a long time, then new species evolve suddenly due to global changes and mass extinctions
coordinated stasis a pattern where most species appear at about the same time
mass extinction the dying out of large numbers of species in a short period of time
community a group of different populations that live in the same area
co-adaptation one species becoming dependent on another species
instantaneous speciation a new species formed in one to several generations
Created by: mrspuffisphat21