A) Hormones
B) Viruses
C) Genes
D) Bacteria
Correct Answer: B
Solution :
Sickle-cell anaemia is a genetic disease reported from negroes due to a molecular mutation of gene \[H{{b}^{A}}\]on chromosome 11 which produces the \[\beta \]chain of adult haemoglobin.You need to login to perform this action.
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