What is nondisjunction?
A) failure of chromosomes to duplicate before mitosis or meiosis
B) failure of cells to divide by cytokinesis in meiosis
C) failure of homologous chromosomes or sister chromatids to separate in meiosis
D) an extra duplication of the chromosomes before mitosis or meiosis
E) failure of sperm and egg to fuse in fertilization
Answer: C
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