Hemoglobin AA refers to normal hemoglobin, which occurs when a person inherits a Hemoglobin A gene from each parent.
Here's a breakdown:
- Hemoglobin A: This is the standard, healthy form of hemoglobin found in most individuals.
- Inheritance: We inherit genes from both our parents.
- AA Genotype: Having the AA genotype means inheriting the Hemoglobin A gene from both parents.
Understanding Hemoglobin Genotypes
To better understand Hemoglobin AA, it's helpful to consider other possible hemoglobin genotypes. The reference text mentions Hemoglobin S and Hemoglobin C as possible changes to normal hemoglobin. Here's a table summarizing different genotypes:
| Genotype | Description |
|---|---|
| AA | Normal Hemoglobin: Inheriting a Hemoglobin A gene from each parent. |
| AS | Carrier of Sickle Cell Trait: Inheriting a Hemoglobin A gene from one parent and a Hemoglobin S from the other. |
| AC | Carrier of Hemoglobin C Trait: Inheriting a Hemoglobin A gene from one parent and a Hemoglobin C from the other. |
| SS | Sickle Cell Anemia: Inheriting a Hemoglobin S gene from each parent. |
| SC | Compound Heterozygote: Inheriting a Hemoglobin S gene from one parent and a Hemoglobin C from the other. |
| CC | Hemoglobin C Disease: Inheriting a Hemoglobin C gene from each parent. |
Key Takeaway
If you have Hemoglobin AA, you have the normal, healthy version of hemoglobin.
