Question

This is the original strand of DNA: ATG AAG TTT GGC TAA Which option would represent a frameshift mutation due to deletion during replication? (1 point)

📝 Responses
( ) ATG AAG TTG GCT AA

( ) ATG TTT GGC TAA

( ) ATG UAA GTT TGG CTA A

( ) ATG AAG TTT GGC GCA TAA

Answer 1

( ) ATG AAG TTG GCT AA

Reason: This sequence is missing one nucleotide (length 14 instead of 15), so the deletion is not a multiple of three and shifts the reading frame. Options B and D remove/add three nucleotides (in‑frame), and C uses U (RNA) and changes bases, so they are not a single‑base frameshift deletion.