Analogy type question:
$(1)$ Zygotene : Synapsis :: Pachytene : .......
$(2)$ Prophase-$I$ : Diakinesis :: Interval between two successive meiotic divisions : .......
$(1)$ Zygotene : Synapsis :: Pachytene : .......
$(2)$ Prophase-$I$ : Diakinesis :: Interval between two successive meiotic divisions : .......
(A) $(1)$ During the Zygotene stage of Prophase-$I$,homologous chromosomes pair up,a process known as Synapsis. Similarly,during the Pachytene stage,the phenomenon of Crossing Over occurs between non-sister chromatids of homologous chromosomes.
$(2)$ Diakinesis is the final stage of Prophase-$I$ in meiosis. The interval or phase between two successive meiotic divisions (Meiosis-$I$ and Meiosis-$II$) is known as Interkinesis.
$(2)$ Diakinesis is the final stage of Prophase-$I$ in meiosis. The interval or phase between two successive meiotic divisions (Meiosis-$I$ and Meiosis-$II$) is known as Interkinesis.
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Analyse the events during every stage of the cell cycle and notice how the following two parameters change:
$(i)$ Number of chromosomes $(N)$ per cell
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List-$I$ List-$II$ $(1)$ Metaphase-$I$ $(a)$ Number of chromosomes becomes half of the parent cell $(2)$ Anaphase-$I$ $(b)$ Each chromosome splits at the centromere to form chromatids $(3)$ Anaphase-$II$ $(c)$ Homologous chromosomes form pairs at the equatorial plate $(4)$ Telophase-$II$ $(d)$ Homologous chromosomes move towards opposite poles
| List-$I$ | List-$II$ |
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| $(2)$ Anaphase-$I$ | $(b)$ Each chromosome splits at the centromere to form chromatids |
| $(3)$ Anaphase-$II$ | $(c)$ Homologous chromosomes form pairs at the equatorial plate |
| $(4)$ Telophase-$II$ | $(d)$ Homologous chromosomes move towards opposite poles |
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