Speciation

AP Biology· difficulty 2/5

A single fish population in one lake diverges into two reproductively isolated forms based on feeding depth. This is

A
$Sympatric speciation$
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B
$Parapatric speciation with barrier$
C
$Peripatric speciation$
D
$Allopatric speciation$

Explanation

Sympatric speciation occurs without geographic isolation; ecological niche differentiation (here feeding depth) creates assortative mating and reproductive isolation within a single area.

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