What is Crossing Over? Real-Life Examples Explained

Learn how crossing over occurs during meiosis with real-life examples and understand its significance in genetic diversity.

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A real-life example of crossing over can be seen in mitotic or meiotic cell division. During meiosis, homologous chromosomes exchange segments of genetic material in a process called genetic recombination or crossing over. This increases genetic diversity, which is crucial for evolution and the survival of species.

FAQs & Answers

  1. What is the definition of crossing over? Crossing over is the exchange of genetic material between homologous chromosomes during meiosis, leading to genetic diversity.
  2. Why is crossing over important? Crossing over increases genetic variation, which is essential for evolution and the adaptability of species.
  3. How does crossing over occur? During meiosis, homologous chromosomes pair up and exchange segments of DNA, a process known as genetic recombination.
  4. Can crossing over happen during mitosis? No, crossing over occurs specifically during meiosis, not mitosis, which is primarily for growth and repair.