The Punctuated Equilibrium Model of Evolution Suggests That New Species

question 36

Multiple Choice

The punctuated equilibrium model of evolution suggests that new species appear

• A) gradually; as groups become isolated, they slowly evolve through their own individual pathways.
• B) only after older species disappear from the fossil record.
• C) suddenly after long periods of time with little to no change.
• D) gradually after long periods of time with little to no change; as groups become isolated, they slowly evolve through their own individual pathways.
• E) gradually over very short periods of time so that intermediate species are often observed in the fossil record.

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Definitions:

Mate Selection

The process by which individuals choose partners with whom to form a romantic relationship, often influenced by personal preferences, societal norms, and genetic factors.

Research Evidence

consists of findings from systematic investigation and analysis that support or refute hypotheses, theories, or practices.

Sensitivity to Stimulation

A trait describing individuals who experience a deeper or more intense response to external sensory stimuli.

Heritability

A measure of how much of the variation in a trait among individuals within a population is due to genetic differences.