Advertisements
Advertisements
प्रश्न
What part of haemoglobin is affected in sickle cell anaemia?
पर्याय
α-polypeptide chains.
β-polypeptide chains.
Both α- and β-polypeptide chains.
None of the above.
MCQ
Advertisements
उत्तर
β-polypeptide chains
Explanation:
Because sickle cell anaemia is caused by a mutation specifically in the β-polypeptide chains of the haemoglobin molecule. In this condition, a single amino acid error occurs where glutamic acid is replaced by valine at the sixth position of the beta chain. This small change causes the haemoglobin to clump together, forcing red blood cells into a stiff, sickle shape that can block blood flow.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
