IB Biology HL A4.1.8 Hl Sympatric Vs Allopatric Speciation Questions

Distinguish allopatric from sympatric speciation, compare the barriers that reduce gene flow, and identify temporal isolation in exam questions.

Exam points

Distinguish allopatric speciation by geographic isolation from sympatric speciation without spatial separation.
Compare physical or geographic barriers in allopatric speciation with temporal, behavioural or intrinsic barriers that reduce gene flow in sympatric populations.
Identify temporal isolation as a sympatric barrier using asynchronous reproductive maturity, such as cicadas maturing in different years.

[Maximum number: 2]

Compare allopatric speciation and sympatric speciation.

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