Inaccurate replication of the genome can lead to mutations that may be lethal to the cell, ultimately resulting in cell death. Since the E. coli strain lacks photoreactivation, excision repair, and SOS repair mechanisms, thymine dimer formation cannot be efficiently repaired, leading to inaccurate replication and eventual cell death.

Solved

If an

Question 64

Multiple Choice

If an

A) Repair would take place through replication and recombination during sister chromatid paring.
B) Inaccurate replication of the genome would eventually result in cell death.
C) uvr B or C would handle the repair of the thymine dimer.
D) It would have no lasting effects.
E) coli strain were phr (no photoreactivation) ,uvrA (no excision repair) ,and recA (no SOS repair) ,what do you expect would be the result of thymine dimer formation?

Correct Answer: