D3.2.19 (HL)—Autosomal gene linkage
Autosomal gene linkage occurs when genes on the same non-sex chromosome tend to be inherited together unless crossing over separates them.
- Syllabus
- First assessment 2025
- Objective
- D3.2.19
- Level
- HL
Exam analysis
Chance of appearing14%of analysed past papers
Latest appearanceNovember 2025
Most common paperPaper2
Typical marks1–2
Common command terms
- Identify
- Define
- Compare
- Explain
- Distinguish
- Outline
Recent exam appearances
November 2025Paper2 ["HL"] · TZ36(b)[ 2 ]D3.2.19 (HL)—Autosomal gene linkage
November 2025Paper1A ["HL"] · TZ131[ 1 ]D3.2.19 (HL)—Autosomal gene linkage
May 2023Paper1 ["HL"] · TZ232[ 1 ]D3.2.19 (HL)—Autosomal gene linkage
November 2022Paper2 ["HL"] · TZ02(b)[ 2 ]D3.2.19 (HL)—Autosomal gene linkage
November 2021Paper2 ["HL"] · TZ02(c)[ 2 ]D3.2.19 (HL)—Autosomal gene linkage
Practice this objective
Coverage 2013–2025 · Updated 16 Jul 2026
Concept essentials
- Linked autosomal genes are on the same non-sex chromosome.
- Linked genes tend to be inherited together more often than expected by independent assortment.
- Crossing over can produce recombinant offspring from linked genes.