In the pachytene stage:
- AChromosomes are thin and long
- BHomologous chromosomes undergo crossing over
- CBivalents become very short and chiasmata move towards ends of chromosomes
- DChromosomes have reached poles
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Crossing over is..........
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View SolutionDuring the process of crossing over,what do homologous chromosomes exchange?
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View SolutionThe various stages of meiosis are given in Column-$I$. Match them with the characteristics of the various stages of meiosis in Column-$II$ and select the correct option using the codes given below.
Column-$I$ Column-$II$ $A$. Pachytene $i$. Pairing of homologous chromosomes $B$. Metaphase-$I$ $ii$. Terminalization of chiasmata $C$. Diakinesis $iii$. Crossing over occurs $D$. Zygotene $iv$. Alignment at the equatorial plate
| Column-$I$ | Column-$II$ |
| $A$. Pachytene | $i$. Pairing of homologous chromosomes |
| $B$. Metaphase-$I$ | $ii$. Terminalization of chiasmata |
| $C$. Diakinesis | $iii$. Crossing over occurs |
| $D$. Zygotene | $iv$. Alignment at the equatorial plate |
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View SolutionDuring meiosis,how many cells are formed from a single cell?
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