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  4. Mutations which alter nudeotide sequence within a gene are :

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Q. Mutations which alter nudeotide sequence within a gene are :

MGIMS WardhaMGIMS Wardha 2004

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.