In oocytes,which stage can last for months or years,since at this stage the chromosomes decondense and are engaged in $RNA$ synthesis?
- ADiakinesis
- BTelophase-$I$
- CDiplotene
- DIntrameiotic interphase
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$S$ - Statement: Meiosis occurs during the formation of reproductive cells. $R$ - Reason: During meiosis,the genetic material replicates twice,and the cell divides twice.
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View SolutionMatch the stages of prophase $I$ given in Column-$I$ with their features in Column-$II$ and choose the correct options from the choices given below:
Column $I$ Column $II$ $A$. Leptotene $i$. Chromosomes visible under light microscope $B$. Zygotene $ii$. Chromosomes start pairing together $C$. Pachytene $iii$. Exchange of genetic materials between non-sister chromatids of the homologous chromosomes. $D$. Diplotene $iv$. Dissolution of synaptonemal complex $E$. Diakinesis $v$. Terminalisation of chiasmata
| Column $I$ | Column $II$ |
|---|---|
| $A$. Leptotene | $i$. Chromosomes visible under light microscope |
| $B$. Zygotene | $ii$. Chromosomes start pairing together |
| $C$. Pachytene | $iii$. Exchange of genetic materials between non-sister chromatids of the homologous chromosomes. |
| $D$. Diplotene | $iv$. Dissolution of synaptonemal complex |
| $E$. Diakinesis | $v$. Terminalisation of chiasmata |
In which of the following stages do chromosomes appear long,thin,and thread-like?
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