Select the correct option for the $Pachytene$ stage.
- ACrossing over occurs in this stage.
- BBivalent chromosomes clearly appear as tetrads.
- CRecombination nodules become visible.
- DAll of the above.
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Similar Questions
Match 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 |
What is observed in chromosomes during the pachytene stage?
Easy
View SolutionDescribe Metaphase-$I$,Anaphase-$I$,and Telophase-$I$ of Meiosis-$I$.
Medium
View SolutionMatch List-$I$ with List-$II$ :
List-$I$ (Sub Phases of Prophase-$I$) List-$II$ $A$. Diakinesis $I$. Synaptonemal complex formation $B$. Pachytene $II$. Completion of terminalisation of chiasmata $C$. Zygotene $III$. Chromosomes look like thin threads $D$. Leptotene $IV$. Appearance of recombination nodules
Choose the correct answer from the options given below:
| List-$I$ (Sub Phases of Prophase-$I$) | List-$II$ |
| $A$. Diakinesis | $I$. Synaptonemal complex formation |
| $B$. Pachytene | $II$. Completion of terminalisation of chiasmata |
| $C$. Zygotene | $III$. Chromosomes look like thin threads |
| $D$. Leptotene | $IV$. Appearance of recombination nodules |
Choose the correct answer from the options given below:
MediumNEET 2024
View SolutionThe pairing of homologous chromosomes occurs in ..........
Medium
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