Sometimes, chemical damage to DNA can occur just before DNA replication begins, not giving the repair system enough time to correct the error before the DNA is duplicated.This gives rise to mutation.If the adenosine in the sequence TCAT is depurinated and not repaired, which of the following is the point mutation that you would observe after this segment has undergone two rounds of DNA replication?

Question

Quizplus · Accepted Answer

Depurination of adenosine in TCAT leads to a missing base. During replication, a random base is inserted opposite the missing base, often resulting in a mutation. After two rounds of replication, this can lead to the sequence TCT.

Sometimes, Chemical Damage to DNA Can Occur Just Before DNA