A4.1.10 (HL)—Barriers to hybridization Topic Practice
A4.1.10 (HL)—Barriers to hybridization Topic Practice
Students practise classifying reproductive barriers—prezygotic (habitat, temporal, behavioural) and postzygotic (hybrid inviability, infertility)—using real examples like mules.
How this is tested
- classify isolation mechanisms as pre- or postzygotic barriers
- explain how hybrid infertility in mules results from mismatched parental chromosomes disrupting meiosis