Which of the following processes contributes directly to genetic variation?

Question

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Meiosis is the process of cell division that specifically generates gametes (sperm or egg cells). During meiosis, the homologous chromosomes (one from each parent) line up and exchange pieces of DNA through a process called crossing-over. This generates new combinations of genetic information, leading to genetic variation among offspring. Binary fission and mitosis are types of cell division that result in two identical daughter cells, so they do not directly contribute to genetic variation. DNA replication is essential for cell division and growth, but it is not a process that directly generates new genetic information or variation.

Which of the Following Processes Contributes Directly to Genetic Variation