Which Correctly Describes Crossing Over

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Which correctly describes crossing over

2 answers:

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-Crossing over occurs betwixt prophase 1 and metaphase ane and is the process where homologous chromosomes pair up with each other and exchange different segments of their genetic material to form recombinant chromosomes. It tin also happen during mitotic segmentation, which may result in loss of heterozygosity.

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Hullo. This question is incomplete. The full question is:

"Which correctly describes crossing over?  A)the procedure whereby nonsister chromatids exchange genetic fabric  B)the process whereby homologous chromosomes are pulled to opposite poles of the jail cell  C)the process whereby sister chromatids are pulled to opposite poles of the cell  D)the procedure whereby homologous chromosome pairs align randomly along the metaphase plate"

Answer:

A)the procedure whereby nonsister chromatids exchange genetic material

Explanation:

Crossing over is a miracle that involves homologous chromatids. They suspension at some points and, in the sequence, in that location is an exchange of corresponding pieces between them. It is worth noting that the exchanges cause the emergence of other gene sequences along the chromosomes. Thus, if in that location are several genes combined on a chromosome, after crossing the combination can exist inverse.

This process occurs during prophase I of meiosis jail cell division. Because of this feature, crossing increases genetic variability.

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Which Correctly Describes Crossing Over,

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