DNA Replication Termination and Telomeres Quiz

What typically happens when two replication forks converge during DNA replication?

• The DNA strands break apart.

• The replication forks reverse direction.

• Topoisomerase runs out of space to act.

• The replication process restarts.

What is the role of the CMG complex in DNA replication?

• It dismantles the replisome.

• It slides onto the double-stranded DNA of the last Okazaki fragment.

• It initiates DNA replication.

• It synthesizes RNA primers.

Why does DNA replication not reach the very end of linear chromosomes?

• Because of the absence of RNA primers.

• Due to the presence of circular DNA.

• Because Okazaki fragments require RNA primers ahead of the lagging strand.

• Due to the lack of DNA polymerase.

What is the repetitive sequence found in human telomeres?

• GCTAGC

• ATCGAT

• CGTACG

• TTAGGG

What can happen if telomerase mistakenly activates in somatic cells?

• It can sometimes lead to cancer.

• It can cause the cells to become dormant.

• It can result in the cells becoming immortal.

• It can lead to increased cell division.