Question

Adult human haemolgobin consists of
(1) 2 subunits (a,a) (2)2 subunits (B,B)
(3)4 subunits (20,2B)(4)3 subunits (20,18).​

Answer 1

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In adult humans, the most common hemoglobin type is a tetramer (which contains four subunit proteins) called hemoglobin A, consisting of two α and two β subunits non-covalently bound, each made of 141 and 146 amino acid residues, respectively. This is denoted as α2β2.

Answer 2

Answer:

The normal hemoglobin (Hb A) in adults contains two α chains and two β chains. Each α chain contains 141 amino acids, and each β chain contains 146 amino acids. Hb A2 contains two α chains and two δ chains.