During meiosis, if chromosomes crossing over do not separate and both migrate to the same cell, a germ cell with an extra chromosome results. What is the term to describe this occurrence?

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Nondisjunction occurs when chromosomes that were crossing over do not separate, and both migrate to the same cell. Points of contact between a chromatid of one chromosome and a chromatid of the other chromosome of a pair, where crossing over and exchange of chromosome segments occur, are called chiasmata. During translation, amino acids form a polypeptide, and one or more polypeptides form a protein. Genes that are located at the same level in homologous chromosomes and that dictate the same functions or characteristics are called alleles.

During Meiosis, If Chromosomes Crossing Over Do Not Separate and Both