D3.2.18 (HL)—Human gene loci
Human gene loci are fixed positions of genes on chromosomes, allowing alleles to be mapped and inherited from parents in inheritance problems.
- Syllabus
- First assessment 2025
- Objective
- D3.2.18
- Level
- HL
Concept essentials
- A locus is a gene position on a chromosome.
- Different alleles of one gene occupy the same locus on homologous chromosomes.
- Loci on the same chromosome may be inherited together if they are linked.
ConceptIB Biology HL