Macroevolution Occurs

question 47

Multiple Choice

Macroevolution occurs

• A)only when reproductive barriers,either pre- or post-zygotic,prevent all gene flow between two populations.
• B)when reproductive barriers,either pre- or post-zygotic,genetically isolate species,even in the presence of some gene flow between two populations.
• C)when species populations undergo changes in allele frequencies over time.
• D)when species morphology from genetic change causes their physical similarity to drift apart.

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AFL-CIO

The American Federation of Labor and Congress of Industrial Organizations, a national trade union center representing millions of workers in the United States.

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