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MDCAT Biology QUESTION #4270
Question 1
Best description of the process of crossing over during meiosis:
  • Duplication of chromosome
  • Exchange of genes between non-sister chromatids✔️
  • Movement of chromosome to opposite poles
  • Separation of sister chromatids
Correct Answer Explanation
Crossing over occurs during prophase I of meiosis when non-sister chromatids of homologous chromosomes exchange segments, increasing genetic diversity.