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QUESTION
When homologous chromosomes crossover, what occurs?
When homologous chromosomes crossover, what occurs?Two chromatids get tangled, resulting in one re-sequencing its DNA.Two sister chromatids exchange identical pieces of DNA.Two strands break and re-join with their homologs.Each of the four DNA strands of a tetrad is broken and the pieces are mixed.Maternal alleles are "corrected" to be like paternal alleles and vice versa.
