Frameshift Mutation

Q. Which one of the following is a wrong statement regarding mutations?

1. Deletion and insertion of base pairs cause frameshift mutations.
2. Cancer cells commonly show chromosomal aberrations
3. UV and gamma rays are mutagens
4. Change in a single base pair of DNA does not cause mutation

Q.

What are founder mutations?

Q. Frameshift mutations are those in which

1. groups of three nucleotides get inserted or deleted
2. a few nucleotides (not in multiples of three) get inserted or deleted
3. a single nucleotide gets replaced by another
4. the reading frame of the nucleotide sequence does not get shifted