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Principles of Inheritance and Variation — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYPrinciples of Inheritance and Variation1 Mark
MCQ
Sickle cell anaemia is:
  • A
    Caused by substitution of valine by glutamic acid in the beta globin chain of haemoglobin.
  • ✓
    Caused by a change in a single base pair of $\text{DNA}.$
  • C
    Characterized by elongated sickle like $\text{RBCs}$ with a nucleus.
  • D
    An autosomal linked dominant trait.
✓

Answer

Correct option: B.
Caused by a change in a single base pair of $\text{DNA}.$

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