Question

the model shows an error that can occur during dna replication
template dna strand
aga cca cga ttc
resulting dna strand
tct ggt tct aag
which type of replication error does it represent?
a. addition
b. deletion
c. translation
d. substitution

Explanation:

1. First, identify the template DNA sequence: AGA CCA CGA TTC
2. Identify the resulting DNA sequence: TCT GGT TCT AAG
3. Compare the two: The template has a segment CCA CGA while the resulting strand has GGT TCT in the corresponding position. This means an extra TCT segment was added to the new strand, which is an addition mutation.
4. Eliminate other options: Deletion would remove bases, substitution swaps one base for another, and translation is a protein synthesis step, not a replication error.

Answer:

A. Addition