Your Textbook Authors Make the Claim That "Sympatric Species with Matching

question 22

Multiple Choice

Your textbook authors make the claim that "sympatric species with matching chromosome numbers are rare." Why is this?

• A) because allopatric speciation is far more common
• B) because sympatric speciation has only been hypothesized but not documented
• C) because coexisting populations need a boundary to gene flow before divergence can occur, and differences in chromosome numbers provide this
• D) because macroevolution is just a theory

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