Genetic recombination occurs through

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(C) Genetic recombination is the process by which genetic material is exchanged between different organisms or chromosomes, leading to the production

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Meiosis and fertilization

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(C) Genetic recombination is the process by which genetic material is exchanged between different organisms or chromosomes, leading to the production of offspring with combinations of traits that differ from those found in either parent.$1$. During $Meiosis$ (specifically $Prophase-I$), the process of $Crossing-over$ occurs between non-sister chromatids of homologous chromosomes, which is a primary source of genetic recombination.$2$. During $Fertilization$, the fusion of two genetically distinct gametes (sperm and egg) brings together different sets of alleles, further contributing to the genetic variation in the offspring.Therefore, both $Meiosis$ and $Fertilization$ are essential for genetic recombination.

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Why did Morgan work with the fruit flies $(Drosophila \text{ } melanogaster)$?

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