This is True that Crossing over is the only mechanism that creates genetic variation by creating hybrid chromosomes with new combinations of alleles.
The term "crossing over" describes the DNA exchange that takes place between paired homologous chromosomes (one from each parent) during the formation of egg and sperm cells (meiosis).
To boost genetic variation, chromosomes that are similar to one another cross across. A piece of one chromosome is swapped for another during crossing over. A hybrid chromosome with a distinctive genetic material pattern is the end outcome.
During the development of gametes, crossing over aids in the random distribution of genetic material. As a result, gametes are created that are genetically unique from the parents and siblings of those gametes.
However, by randomly arranging chromosomes through independent assortment and fertilization, genetic variation is produced.
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