Do alpha and beta chains of haemoglobin carry the same amount of oxygen per chain ?
The haemoglobin molecule is a tetramer consisting of 4 polypeptide chains, known as globins, which are usually:
2 alpha chains that are each 141 amino acids long
2 beta chains that are each 146 amino acids long
Attached to each chain is an iron-containing molecule known as haem.
They carry same amount of haemoglobin.