Given below is the representation of a certain event at a particular stage of a type of cell division which is this stage:

Prophase of mitosis

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Both prophase and metaphase of mitosis

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Prophase I during meiosis

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Prophase II during meiosis

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Solution

The correct option is C Prophase I during meiosis
Crossing-over occurs during prophase I of Meiosis I. In this stage of meiosis homologous chromosomes form chiasmata (singular: chiasma) or intersection points between them. After the formation of chiasmata at different points, the members (chromosomes) of the homologous pair exchange chromosomal segments with each other.

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Given below is the representation of a certain event at a particular stage of a type of cell division. Which is this stage?

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Match the following stages during Mitotic cell division with the key changes:

$\begin{matrix} Column I & Column II i. Prophase & a. Formation of 2 daughter cells, preparation for next division. ii. Metaphase & b. Organelles disappear, formation of chromosomes. iii. Anaphase & c. Spindle fibres, chromosomes at equatorial plate. iv. Telophase & d. Splitting of chromatids, chromosomes move towards poles. v. Interphase & e. Spindle fibres disappear, Cytokinesis follows. \end{matrix}$

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