When does pairing occur in chromosomes in meiosis?

Leptotene

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Zygotene

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Pachytene

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Diakinesis

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Solution

The correct option is B Zygotene
During zygotene of prophase I, chromosomes start pairing together and this process of association is called synapsis. At this stage, the synapsis of homologous chromosomes takes place, facilitated by the assembly of the synaptonemal complex.

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Fill in the blanks
(a) Mitosis occurs in our ..... cells.
(b) Mitosis produces two daughter cells whereas meiosis produces ...... daughter cells.
(c) Meiosis occurs only in ..... cells.
(d) Modern humans have 46 chromosomes. Their sperms and eggs will have......chromosomes each.
(e) During the pairing of chromosomes in meiosis, the ...... chromosomes come to lie side by side.
(f) The.......(s) are surrounded by radiating rays and termed as aster.

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When does pairing occur in chromosomes in meiosis?

The correct option is B ZygoteneDuring zygotene of prophase I, chromosomes start pairing together and this process of association is called synapsis. At this stage, the synapsis of homologous chromosomes takes place, facilitated by the assembly of the synaptonemal complex.

The correct option is B Zygotene
During zygotene of prophase I, chromosomes start pairing together and this process of association is called synapsis. At this stage, the synapsis of homologous chromosomes takes place, facilitated by the assembly of the synaptonemal complex.