Read the following paragraph carefully and find out the correct words for all the three blanks indicated as (A) (B) and (C )
"the substitution of amino acid in the globin protein results due to the single base subsitution at the `6^(th)` codon of the `beta`-globin gene from `overset((A))("_____")` to `overset((B))("_____")`. The mutant haemoglobin molecule undergoes polymerisation under `overset((C))("_____")` tension causing the change in the shape of the RBO from biconcave disc to elongated sickle-like structure.