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Sickle cell anaemia is:
Options
(a) caused by substitution of valine by glutamic acids in the beta globin chain of heamoglobin
(b) caused by change in single base pair of DNA
(c) characterised by elongatd sickle like RBCs witha nucleus
(d) an autosomal linked dominant trait
Correct Answer:
caused by change in single base pair of DNA
Explanation:
Sickle cell anaemia is caused by a change in a single base pair of DNA. Sickle cell anaemia is the name of a specific form of sickle-cell disease in which there is homozygosity for the mutation that causes HbS. Sickle-cell disease, or sickle-cell anaemia (or drepanocytosis), is a life-long blood disorder characterized by red blood cells that assume an abnormal, rigid, sickle shape. Sickling decreases the cells flexibility and results in a risk of variouso complications.
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- The bladders of Utricularia and pitchers of Nepenthes are modification of
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Topics: Genetics
(204)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The genes controlling seven traits in pea, as studied by Mendel, were later found to be
- The bladders of Utricularia and pitchers of Nepenthes are modification of
- EMP path is another name of
- In his classic experiments on sea plants,Mendel did not use
- Mitchells chemiosmotic theory belongs to
Topics: Genetics (204)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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