Respuesta :

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During meiosis, crossing over occurs during prophase I. It is the exchange of genetic material between homologous chromosomes that results in recombinant chromosomes, which contribute to genetic diversity.
Histrionicus

Answer:

During prophase 1 of meiosis crossing over occurs.

Explanation:

Crossing over is the process which increases genetic diversity by the exchange of equal segments of two homologous chromosomes with each other. crossing over results in the new gene combinations. It occurs in the first phase of meiosis which is prophase 1.

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