Chapter 14 - Speciation and Punctuated Equilibrium

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Mammary gland

A milk-producing structure on a mammal

Co-adaptation

One species becoming dependent on another species

Asexual reproduction

Reproduction that involves one parent and no egg or sperm

Stasis

Showing little change over time

Archaea

The domain of eukaryotic organisms

Sympatric speciation

When similar organisms live nearby, but do not interbreed due to differences in behavior

Reproductively isolated

A division between populations that once mated, but can no longer mate and produce fertile offspring

Subpopulation

A division of a population

Subspecies

A division of a species

Community

A group of different populations that live in the same area

Kingdom

A group of similar phyla or divisions

Genus

A group of similar species

Instantaneous speciation

A new species formed in one to several generations

Coordinated stasis

A pattern where most species appear at about the same time

Biological species concept

A principle that defines a specis as populations that can interbreed and produce offsprings

Ecological species concept

A principle that defines species as populations that can interbreed and produce offspring based on their niche

Phylum

A subdivision of the animal kingdom

Three - domain system

A system that classifies all living things into three broad groups

Punctuated equilibrium

A theory that states species stay the same for a long time, then new species evolve suddenly due to global changes and mass extinction

Classify

to group

Fertile

Capable of producing offspring

Biochemistry

Chemistry that deals with the chemical compounds and processes in organisms

Mass extinction

The dying out of large numbers of species in a short period of time

Morphology

The study of differences in body forms of organisms

Niche

The way of life of a species

Interbreed

To breed together

Allopatric speciation

When similar organisms do not interbreed due to physical barriers

Division

a subdivision of the plant kingdom


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