Patterns of Evolution

Which answer best describes macroevolution?

• Largest-scale evolutionary changes via speciation or extiniction that occur over time
• A scientist who classifies organisms into groups and makes a hypothesis on whether they are a different species based on the evidence
• Identification of species by differences in their appearances
• AP biological trait evolves in two unrelated species as a result of exposure to similar environments

The death of every member of a species

• The flu
• epidemic
• extinct
• population

What is a mass extinction?

• When all the species in a particular area on earth suddenly go extinct
• When multiple species from all over the earth suddenly go extinct 
• When one species goes extinct due to habitat changes
• When all life on earth is wiped out 

Describes a patter of long, stable periods interrupted by brief periods of more rapid change

• convergent evolution
• coevolution
• punctuated equilibrium
• adaptive radiation

The idea that evolution seems to occur in spurts of time.

• stabilizing selection
• directional selection
• disruptive selection
• puntuated equilibrium

The hypothesis that evolution of a species occurs gradually over time as a slow and constant process is known as

• speciation
• punctuated equilibrium
• gradualism
• microevolution

The hypothesis that evolution of a species occurs in periods of rapid change separated by periods of little or no change is called

• divergence
• gradualism
• punctuated equilibrium
• isolation

The evolution of an ancestral species into an array of species that occupy different niches

• convergent evolution
• coevolution
• speciation
• adaptive radiation

A single species that has evolved into several different forms that live in different ways has undergone

• adaptive radiation.
• coevolution.
• punctuated equilibrium.
• mass extinction.

What is convergent evolution?

• evolution toward similar traits in unrelated species
• evolution toward different traits in closely related species
• elimination of a species from Earth
• the rise of two or more species from one existing species