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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?
A
Both prophase and metaphase of mitosis
B
Prophase I during meiosis
C
Prophase II during meiosis
D
Prophase of mitosis
Detailed Solution
The figure shows homologous chromosomes paired together with exchange of segments between non-sister chromatids (crossing over).
Pairing of homologues and crossing over occur only in prophase I of meiosis (zygotene and pachytene).
They do not occur in mitosis or in prophase II.
Pairing of homologues and crossing over occur only in prophase I of meiosis (zygotene and pachytene).
They do not occur in mitosis or in prophase II.