Question

Genetic Mutations Produce Variation Quick Check 3 of 53 of 5 Items Question Examine the two strands of DNA below. Which kind of mutation occurred? Original strand: AGC GTA CCC TAC New strand: AGC GTA ACC TAC (1 point) Responses deletion deletion substitution substitution insertion insertion frameshift frameshift Skip to navigation page 11 of 11

Answer 1

To identify the type of mutation that occurred between the original strand and the new strand of DNA, we can compare them:

• Original strand: AGC GTA CCC TAC
• New strand: AGC GTA ACC TAC

Looking closely, the only difference is in the third set of triplet nucleotides, where "CCC" in the original strand has changed to "ACC" in the new strand.

This kind of change, where one nucleotide is replaced by another without any nucleotides being added or removed, is known as a substitution mutation.

So, the correct response is substitution.