Question

10. Which change to a DNA molecule would have the least effect on an organism?

Answer 1

Mutation. Either exchanging a Purine with another Purine, Pyrimidin with another Pyrimidin, or completely exchanging a Purine with a Pyrimidin or vice versa. Point- or Frameshift-Mutation.

Answer 2

Answer: Change in a single nitrogen base in the DNA sequence will not have any significant effect on the organism.

Step-by-step explanation:

This is known as point mutation and it does not have any significant change in the protein and it is least harmful type of DNA mutation.