Which of the following statements about mitosis is incorrect?

• The daughter nuclei are genetically identical to the parent nucleus
• Chromosomes separate during anaphase due to the interaction of polar microtubules from opposite poles pushing against each other
• Chromosomes separate during anaphase when the kinetochore microtubules shorten as they depolymerize
• Chromosomes move to the metaphase plate using motor proteins, a kind of kinesin, attached to spindle fibers