Differentiate between the Prophase of Mitosis and the Prophase of Meiosis.
(N/A)
| Prophase of Mitosis | Prophase of Meiosis |
|---|---|
| $(i)$ Short duration compared to the entire cell cycle. | $(i)$ Prophase-$I$ of Meiosis is significantly longer in duration. |
| $(ii)$ It does not have any sub-phases. | $(ii)$ It is divided into five sub-phases: Leptotene,Zygotene,Pachytene,Diplotene,and Diakinesis. |
| $(iii)$ Chromosomes consist of two sister chromatids attached at the centromere. | $(iii)$ Homologous chromosomes pair up to form bivalents or tetrads. |
| $(iv)$ No crossing over or chiasmata formation occurs. | $(iv)$ Crossing over and chiasmata formation are characteristic features. |
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Similar Questions
Polytene chromosomes in salivary glands are formed as a result of:
Medium
View SolutionMitosis results in producing two cells which are similar to each other. What would be the consequence if each of the following irregularities occur during mitosis?
$(a)$ Nuclear membrane fails to disintegrate
$(b)$ Duplication of $DNA$ does not occur
$(c)$ Centromeres do not divide
$(d)$ Cytokinesis does not occur
$(a)$ Nuclear membrane fails to disintegrate
$(b)$ Duplication of $DNA$ does not occur
$(c)$ Centromeres do not divide
$(d)$ Cytokinesis does not occur
Difficult
View SolutionWhite blood corpuscles divide by
Medium
View SolutionSelect the correct option $:-$
Column $-I$ Column $-II$ $(a)$ Synapsis aligns homologous chromosomes $(i)$ Anaphase$-I$ $(b)$ Synthesis of tubulin protein $(ii)$ Zygotene $(c)$ Action of enzyme recombinase $(iii)$ $G_2$-phase $(d)$ Centromeres split and chromatids move towards opposite poles $(iv)$ Anaphase$-II$ $(v)$ Pachytene
| Column $-I$ | Column $-II$ |
|---|---|
| $(a)$ Synapsis aligns homologous chromosomes | $(i)$ Anaphase$-I$ |
| $(b)$ Synthesis of tubulin protein | $(ii)$ Zygotene |
| $(c)$ Action of enzyme recombinase | $(iii)$ $G_2$-phase |
| $(d)$ Centromeres split and chromatids move towards opposite poles | $(iv)$ Anaphase$-II$ |
| $(v)$ Pachytene |
Medium
View SolutionStatement-$A$: Chromosomes are not clearly visible during telophase.
Statement-$B$: Chromosomes are clearly visible during metaphase.
Statement-$B$: Chromosomes are clearly visible during metaphase.
Easy
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