Final answer:
Insertion is different from substitution, SNP, transition, and transversion because it involves the addition of nucleotides, potentially causing a frameshift mutation, whereas the others involve replacement of nucleotides without altering the sequence length.
Step-by-step explanation:
The question asks which one among substitution, SNP (Single Nucleotide Polymorphism), transition, transversion, or insertion is different from the rest. Insertion is the correct answer because it is the only type of mutation listed that does not involve a simple replacement of one nucleotide with another. Instead, insertion involves the addition of one or more nucleotides into the DNA sequence, which can lead to a frameshift mutation if the number of nucleotides inserted is not a multiple of three. The other options (substitution, SNP, transition, and transversion) are all types of mutations where one nucleotide is replaced by another but do not necessarily add or remove nucleotides from the DNA sequence.