A) frame shift mutations
B) base pair substitutions
C) both 'a' and 'b'
D) none of these
Correct Answer: A
Solution :
Gene mutation or point mutation is the result of a change in the nucleotide sequence of the DNA molecule in a particular region of the chromosome. Gene mutation occurs in the form of duplication, insertion deletion, inversion or substitution of bases. The addition or deletion of a base may change the reading frame of nucleotide sequence such type of change in nucleotide sequence is called frame-shift mutation.
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