Question

This condition is necessary for 2 points
a cell to qualify through the G2
checkpoint *
O
Cell should be of a size sufficient
enough
O
Complete and accurate DNA
replication
O Sufficient stockpile of nucleotides
O
Complete attachment of mitotic
spindle fibers to kinetochores​

Answer 1

Answer:

          0) Complete and accurate DNA replication

Explanation:

               1.  To make sure that cell division goes smoothly (produces healthy daughter cells with complete, undamaged DNA), the cell has an additional checkpoint before the M phase, called the $G^{2}$ checkpoint. At this stage, the cell will check:

 DNA integrity. Is any of the DNA damaged?

  DNA replication. Was the DNA completely copied during the S phase

              2.  If errors or damage are detected, the cell will pause at $G^{2}$ the checkpoint to allow for repairs. If the checkpoint mechanisms detect problems with the DNA, the cell cycle is halted, and the cell attempts to either complete DNA replication or repairs the damaged DNA.

              3.  If the damage is irreparable, the cell may undergo apoptosis, or programmed cell $death^{2}$. This self-destruction mechanism ensures that damaged DNA is not passed on to daughter cells and is important in preventing cancer.

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