5 stages of prophase 1 of meiosis with diagram
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With the help of suitable diagrams explain the 5 stages of prophase 1 of meiosis
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Explanation:
The prophase I of meiosis occurs in the following stages:
1. Leptotene- This phase is the start of prophase-I. It is marked by the condensation of the chromosomes.
2. Zygotene- In this phase the homologous chromosomes start pairing up, called the synapsis. The synaptonemal complex starts building up. This complex is required to hold the homologous chromosomes at a place close to each other. Bivalent chromosomes are visible at this stage.
3. Pachytene- In this stage, this non-sister chromatids of homologous chromosomes exchange their parts, the process is called the crossing over. The attachment point of the crossing-over of the non-sister chromatids is called chiasma.
4. Diplotene- The crossing-over process is completed by this stage. The homologous chromosomes remain attched at the point of chiasma.
5. Diakinesis- The homologous chromosomes start to separate and synaptonemal complex disappears. The nuclear membrane also disappears.
solution
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