The diagram shows meiosis and gamete formation in a cell with four chromosomes. Identify the stages $P$ and $Q$.
- AMetaphase-$I$,Metaphase-$II$
- BAnaphase-$I$,Anaphase-$II$
- CMetaphase-$I$,Anaphase-$II$
- DAnaphase-$I$,Metaphase-$II$
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Condensation of chromosomes occurs in
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View SolutionMatch the stages of meiosis in Column-$I$ to their characteristic features 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-$I$ $(ii)$ Terminalisation of chiasmata $(C)$ Diakinesis $(iii)$ Crossing-over takes place $(D)$ Zygotene $(iv)$ Chromosomes align at equatorial plate
| Column-$I$ | Column-$II$ |
| $(A)$ Pachytene | $(i)$ Pairing of homologous chromosomes |
| $(B)$ Metaphase-$I$ | $(ii)$ Terminalisation of chiasmata |
| $(C)$ Diakinesis | $(iii)$ Crossing-over takes place |
| $(D)$ Zygotene | $(iv)$ Chromosomes align at equatorial plate |
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View SolutionChiasmata formation occurs during
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View SolutionDescribe the following:
$(a)$ Synapsis
$(b)$ Bivalent
$(c)$ Chiasmata
Draw a diagram to illustrate your answer.
$(a)$ Synapsis
$(b)$ Bivalent
$(c)$ Chiasmata
Draw a diagram to illustrate your answer.
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