You identify a mutant whose chromosomes shorten after each round of replication.A mutation in which gene would explain this observation?
A)DNA polymerase
B)telomerase
C)DNA ligase
D)DNA gyrase

Question

Quizplus · Accepted Answer

Telomerase is responsible for maintaining the length of telomeres (the ends of chromosomes) during DNA replication. Without telomerase activity, the telomeres shorten with each round of replication, eventually leading to cellular senescence or death. Therefore, a mutation in the telomerase gene would explain the observed shortening of chromosomes. Mutations in DNA polymerase, DNA ligase, or DNA gyrase would not directly affect telomere length.

You Identify a Mutant Whose Chromosomes Shorten After Each Round