Question

question 13 1 pts
what is necessary for a cell to pass the g₂ checkpoint?
○ cell has reached a sufficient size
○ proper attachment of mitotic spindle fibers to kinetochores
○ the chromatin has condensed into chromosomes
○ an adequate stockpile of nucleotides
○ accurate and complete dna replication

Explanation:

The G₂ checkpoint occurs after DNA replication (in S phase) and before mitosis. Its key role is to verify that DNA was copied fully and correctly to prevent damaged or incomplete DNA from entering mitosis.

• Sufficient cell size is checked at the G₁ checkpoint.
• Spindle fiber attachment is verified at the M checkpoint.
• Chromatin condensation happens during prophase, after the G₂ checkpoint.
• Nucleotide stockpiles are needed for S phase replication, not as a G₂ checkpoint requirement.

Answer:

accurate and complete DNA replication