A mutation occurs when a base in the DNA sequence is replaced by a different
base.

Substitution Mutations

Explanation: A substitution mutation occurs when specific bases (A, T, C or G) in a gene are swapped for different ones. This type of mutation doesn't cause a difference in the number of bases like insertion or deletion mutations do. Substitution mutations just switch out one or more bases for different ones.

Hope this helps :3

i am positive it is c. condensing but i may be wrong

bc blah

explanation:

bc blah