Key Terms in The Origin and Diversification of Life on Earth

adaptive radiation,

allopatric speciation,

analogous trait,

archaea,

background extinction,

biodiversity,

biological species concept,

class,

convergent evolution,

domain,

extinction,

family,

genus,

homologous feature,

horizontal gene transfer,

hybrid,

hybridization,

kingdom,

life,

macroevolution,

mass extinction,

microbe,

microevolution,

microsphere,

monophyletic,

morphological species concept,

node,

order,

phylogeny,

phylum,

polyploidy,

postzygotic barrier,

prezygotic barrier,

protist,

punctuated equilibrium,

reproductive isolation,

ring species,

speciation,

speciation event,

species,

specific epithet,

sympatric speciation,

systematics,

virus,

ABOUT THE CHAPTER OPENING PHOTO

Millions of hairs on each gecko foot produce an electrical attraction force that enables them to adhere to surfaces, walk up walls, and even run upside down across ceilings. Shown here: several gecko feet adhering to polished glass.

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