Answer: One sign of physical change is melting, freezing.
Answer: anaphase
Explanation: Nondisjunction can occur during anaphase of mitosis, meiosis I, or meiosis II. During anaphase, sister chromatids (or homologous chromosomes for meiosis I), will separate and move to opposite poles of the cell, pulled by microtubules
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<span>Polymerization is the answerr</span>
I believe the answer for your question is a mitochondria.
I believe the answer you're looking for is Evolution.