Question

The hemoglobin in humans exists in how many main types?

Answer 1

There are three main types of hemoglobin in humans: HbA, HbA₂, and HbF.

Step-by-step explanation:

The hemoglobin in humans exists in three main types:

1. HbA: Found in normal adult human beings - contains 2a and 2ẞ chains.
2. HbA₂: Found in some human beings and is considered normal - contains 2a and 28 chains.
3. HbF: Foetal hemoglobin - found in growing foetus - contains 2a and 2y chains.