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.
A cell when undergoes the process of cell division there are structures known as spindle fibres that are required to pull the chromosomes off to the poles of the cell so that it can be segregated into the cells properly while division. These spindle fibres are made of microtubules that are protein molecules constituting the cytoskeleton of a cell.