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Which event occurs during the first meiotic prophase, and is known to be a reciprocal exchange of chromosome segments between homologous chromosomes?

a. Synapsis
b. Crossing over
c. Independent assortment
d. Segregation

User Just Jake
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1 Answer

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Final answer:

Crossing over is the event during the first meiotic prophase in which there is a reciprocal exchange of chromosome segments between homologous chromosomes.

Step-by-step explanation:

During the first meiotic prophase, the event that occurs and is known to be a reciprocal exchange of chromosome segments between homologous chromosomes is crossing over.

Crossing over occurs during prophase I of meiosis, when homologous chromosomes line up in pairs, known as tetrads. Non-sister chromatids of homologous chromosomes exchange genetic material, creating unique combinations of genes and increasing genetic variation.


This process is also called genetic recombination, and it plays a crucial role in producing gametes with different sets of alleles from the parents.

User Rang
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