- AProphase I
- BMetaphase I
- CAnaphase II
- DTelophase I
Explanation:
The chiasmata formation occurs during diplotene phase of prophase I of meiosis I.
Chiasmata are the points of attachment between non-sister chromatids of two homologous chromosomes.
It leads to an exchange of segments and creates variation.
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| Column $I$ | Column $II$ |
| $A$. Centrioles |
$I$. Non-membrane bound organelle Which helps in cell division |
| $B$. Fimbriae |
$II$. Special structure of bacteria which help them to attach with rocks in |
| $C$. Endomembrane |
$III$. Includes those organelles system whose functions are coordinated |
| $D$. Mitochondria |
$IV$. Divide by fission and site of aerobic respiration |
$(i)$ It causes potato spindle tuber disease.
$(ii)$ It has free $RNA.$
$(iii)$ Molecular weight of $RNA$ is low. Identify the infections agent.