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Principles of Inheritance and Variation

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Advanced Botany

Plant Growth and Development
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Microbes in Human Welfare
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Molecular Basis of Inheritance
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Biological Classification
  1. Sickle cell anaemia is induced by
    1. change of amino acid in a-chain of haemoglobin
    2. change of amino acid in b-chain of haemoglobin
    3. change of amino acid in both a- and b-chain of haemoglobin
    4. change of amino acid in either a- or b-chain of haemoglobin
Correct Option: B

Sickle cell anaemia is a hereditary disorder of autosomal nature caused by mutation of the gene controlling β-chain of haemoglobin. It involves substitution of glutamine by valine.


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