Meiosis, which occurs during sexual reproduction, allows for a great variety of possible gene combinations. Which of the following can increase genetic variation during meiosis?
the duplication of a gene caused by an error in chromosomal crossover
the transposition of a gene from one place in an organism's genome to another
the deletion of a gene caused by an error in chromosomal crossover
the exchange of genes during chromosomal crossover
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All of the options listed can increase genetic variation during meiosis.
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