NCERT Biology Class 12, Chapter 5

The mechanism of formation of Hb Lepore δβ gene is frameshift mutation: NEET Biology MCQ

Last updated: July 30, 2026

Reviewed by MedQGo Editorial Team | Last updated: July 30, 2026

The mechanism of formation of Hb Lepore δβ gene is

Abase substitution

Bframeshift mutation

Crearrangement

Ddeletion

Correct answer: B. frameshift mutation

Hb Lepore δβ is formed due to a frameshift mutation where an extra base is inserted between the β-globin gene and the δ-globin gene, leading to a fusion of these two genes.

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