Question: 93. Spindle fibers attach to kinetochores of chromosomes during
(1) Prophase
(2) Metaphase
(3) Anaphase
(4) Telophase
Answer: Option (2)
Explanation:
During metaphase of mitosis, chromosomes align at the equatorial plane of the cell.
At this stage, spindle fibers extending from opposite poles of the cell attach to the kinetochores present on the centromeres of chromosomes.
This attachment ensures that each sister chromatid is connected to spindle fibers from opposite poles.
Proper attachment is essential for equal separation of chromatids during the next stage, anaphase.
Hence, spindle fibers attach to kinetochores during metaphase.