Mutations which alter nucleotide sequence within a gene are called

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5.Molecular Basis of Inheritance

medium

Mutations which alter nucleotide sequence within a gene are called

frame shift mutations

base pair substitutions

both $(a)$ and $(b)$

none of these

Solution

In frame shift mutation the reading of the frame of the base sequence shifts laterally either in forward direction due to addition of one or more nucleotides or in backward direction due to deletion of one or more nucleotides. Whereas in base pair substitution a base pair is replaced by another base which results in change of nucleotide sequence.

Standard 12

Biology