Which of the statements given below is correct with respect to frameshift mutation

Q. The insertion or deletion of a base pair into the genetic code will cause a frameshift mutation unless the number of base pairs inserted or deleted is

Q. Addition or deletion of a single nucleotide produces _____ mutation ?

Q. Which of the following statement(s) are correct with respect to mutation?
I. Insertion or deletion of 3 bases or its multiple does not change the reading frame from that point onwards
II. Mutation may occur due to the defects in the duplication of DNA
III. Mutations can be caused by certain chemicals

Q. What is a codon?