Biology

The correct answer is: C.The cell checks for proper chromosome alignment and attachment to the spindle fibers.

This is known as the Metaphase Checkpoint, or Spindle Assembly Checkpoint. During this checkpoint, the cell ensures that all chromosomes are correctly aligned along the metaphase plate and that each chromosome is properly attached to the spindle fibers through their kinetochores. Only once this alignment and attachment are confirmed does the cell proceed to the next phase, anaphase, where the sister chromatids will be separated.

Here’s why the other options are incorrect:

A.The cell checks for DNA replic...