Medical Definition of SCINTILLATING SCOTOMA. : a blind spot in the visual field that is bordered by shimmering or flashing light and that is often a premonitory symptom of migraine attack. a blind spot in the visual field that is bordered by shimmering or flashing light and that is often a premonitory symptom of migraine attack.
The centromeres of chromosomes attach to the spindle fibers during metaphase. The spindle fibers bring about the separation of sister chromosomes to the opposite poles.When s â¦ pindle fibers do not attach to the centromeres, the doubling of chromosomes leads to polyploidy in the cell.Answered.he centromeres of chromosomes attach to the spindle fibers during metaphase. The spindle fibers bring about the separation of sister chromosomes to the opposite poles.
Mitotic spindle. The spindle apparatus is the collective term for all the spindle fibers that form during mitosis or meiosis. These spindle fibers are responsible in moving and segregating the chromosomes during nuclear division.