IB Biology HL 3.2.19 Autosomal gene linkage Question Bank
Practise IB Biology HL 3.2.19 by applying autosomal gene linkage concepts to exam-style questions.
- Syllabus
- First assessment 2025
- Course
- Biology HL
- Level
- HL
Practise IB Biology HL 3.2.19 by applying autosomal gene linkage concepts to exam-style questions.
Hemophilia is a sex-linked disease that affected some members of royal families in Europe during the 19th and 20th centuries.

Explain gene linkage and its effects on inheritance.
a. Located on the same chromosome.
b. Genes/gene loci close together (on the same chromosome).
c. Do not follow (the law of) independent assortment.
d. More chance of recombination if genes are further apart.
e. Inherited together unless crossing over/recombination occurs.
f. Ratios of offspring in dihybrid crosses are different from expected/non-Mendelian.
OR
More offspring with parental phenotype combinations than expected.
[2 max]