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IB Biology HL D3.2.19 Hl Autosomal Gene Linkage Questions

Explain how linked autosomal loci are inherited together and how crossing over produces recombinant combinations in IB Biology HL D3.2.19.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify linked autosomal genes as loci on the same non-sex chromosome and explain why they tend to be inherited together.
  • Use crossing-over between linked loci to explain recombinant offspring and departures from expected Mendelian or 1:1:1:1 ratios.

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Study D3.2.19 (HL)—Autosomal gene linkage conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL D3.2.19 Hl Autosomal Gene Linkage Questions question 1

[Maximum number: 2]

Hemophilia is a sex-linked disease that affected some members of royal families in Europe during the 19th and 20th centuries.

Figure for Question IB Biology HL D3.2.19 Hl Autosomal Gene Linkage Questions question 1 — IB Biology HL

Explain gene linkage and its effects on inheritance.

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