# Blood Grouping (ABO System)

> The inheritance of the ABO blood groups is an example of multiple alleles. Three alleles, I^A, I^B and i, combine to give four blood groups. Blood groups show both complete dominance and…

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## Full notes

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## More in GENETICS AND INHERITANCE

- [Sex-Linked Inheritance](https://www.hlayiso.com/grade-12/life-sciences/notes/genetics-and-inheritance/sex-linked-inheritance) — Previous section
- [Dihybrid Crosses](https://www.hlayiso.com/grade-12/life-sciences/notes/genetics-and-inheritance/dihybrid-crosses) — Next section
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## Frequently asked questions

### What will I learn in "Blood Grouping (ABO System)"?

This section covers Blood Grouping (ABO System) as part of GENETICS AND INHERITANCE in Grade 12 Life Sciences. You'll find clear explanations, worked examples, and key definitions aligned to the CAPS curriculum.

### Is this section aligned with the CAPS curriculum?

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