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Question
When does pairing occurs in chromosomes in meiosis?
When does pairing occurs in chromosomes in meiosis?
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Solution
The correct option is B Zygotene
Pairing of chromosomes takes place during zygotene. The zygotene stage occurs as the chromosomes line up with each other into homologous chromosome pairs. At this stage, the synapsis of homologous chromosomes takes place, facilitated by assembly of central element of the synaptonemal complex. Pairing is highly specific and exact. The paired chromosomes are as called bivalent or tetrad chromosomes.
Pairing of chromosomes takes place during zygotene. The zygotene stage occurs as the chromosomes line up with each other into homologous chromosome pairs. At this stage, the synapsis of homologous chromosomes takes place, facilitated by assembly of central element of the synaptonemal complex. Pairing is highly specific and exact. The paired chromosomes are as called bivalent or tetrad chromosomes.
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