Where Do the Microtubules of the Spindle Originate During Mitosis

Question

Where do the microtubules of the spindle originate during mitosis in both plant and animal cells?
A)centromere
B)centrosome
C)centriole
D)chromatid
E)kinetochore

Accepted Answer

The microtubules of the spindle originate from the centrosome, which duplicates and then separates during mitosis in both plant and animal cells. Centrioles are a component of the centrosome, but not all cells have centrioles, and even those that do can still form a spindle without them. Centromeres and kinetochores are attachment points for the spindle, but they do not originate the microtubules themselves. Chromatids are individual strands of DNA that are pulled apart by the spindle during mitosis.