Crossing over takes place between which chromatids and in which stage of the cell cycle?

Non-sister chromatids of non-homologous chromosome at zygotene stage of prophase-I

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Non-sister chromatids of homologous chromosome at pachytene stage of prophase-I

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Non-sister chromatids of homologous chromosome at zygotene stage of prophase I

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Non-sister cromatids of non-homologous chromosomes at pachytene stage of prophase I

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Solution

The correct option is B Non-sister chromatids of homologous chromosome at pachytene stage of prophase-I
Prophase I of meiosis I is divided into - leptotene, zygotene, pachytene, diplotene and diakinesis.
Crossing over is the exchange of genetic materials between non-sister chromatids of homologous chromosome. It takes place at pachytene stage of prophase-I.

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Similar questions

Name the stage of the cell cycle at which one of the following events occur:

(i) Chromosomes are moved to the spindle equator
(ii) Centromere splits and chromatids separate
(iii) Pairing between homologous chromosomes takes place
(iv) Crossing over between homologous chromosomes takes place

Q. Name the stage of cell cycle at which one of the following events occur.
(i) Chromosomes are moved to spindle equator.
(ii) Centromere splits and chromatids separate.
(iii) Pairing between homologous chromosomes takes place.
(iv) Crossing over between homologous chromosomes takes place.

Q. Crossing over occurs in which of the following stage of cell cycle?

Q. In which stage of meiosis, crossing over takes place?

Q. In which of the following stages of cell cycle does both centromere splitting and separation of sister chromatids occur?

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