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_______________ __________ is the exchange of genetic information between homologous pairs of chromosomes which accounts for genetic variation.

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Answer:

Chromosomal crossover, or crossing over

is the exchange of genetic information between homologous pairs of chromosomes which accounts for genetic variation.

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User Khristie
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Step-by-step explanation:

Chromosomal crossover, or crossing over, is the exchange of genetic material during sexual reproduction between two homologous chromosomes' non-sister chromatids that results in recombinant chromosomes. ... Crossing over is described, in theory, by Thomas Hunt Morgan.

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User JNDPNT
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