explanation about meiosis phases
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Interphase:- the resting stage of the cell.
Prophase:-Chromosomes become visible, crossing-over occurs, the nucleolus disappears, the meiotic spindle forms, and the nuclear envelope disappears. ... The duplicated homologous chromosomes pair, and crossing-over (the physical exchange of chromosome parts) occurs.
Metaphase:-The centrioles are at opposite poles of the cell. The pairs of homologous chromosomes (the bivalents), now as tightly coiled and condensed as they will be in meiosis, become arranged on a plane equidistant from the poles called the metaphase plate.
Anaphase:- The two chromosomes in each bivalent separate and migrate toward opposite poles. ... Notice that in anaphase I the sister chromatids remain attached at their centromeres and move together toward the poles.
Telophase:-The homologous chromosome pairs complete their migration to the two poles as a result of the action of the spindle. Now a haploid set of chromosomes is at each pole, with each chromosome still having two chromatids. A nuclear envelope reforms around each chromosome set, the spindle disappears, and cytokinesis follows.
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Prophase:-Chromosomes become visible, crossing-over occurs, the nucleolus disappears, the meiotic spindle forms, and the nuclear envelope disappears. ... The duplicated homologous chromosomes pair, and crossing-over (the physical exchange of chromosome parts) occurs.
Metaphase:-The centrioles are at opposite poles of the cell. The pairs of homologous chromosomes (the bivalents), now as tightly coiled and condensed as they will be in meiosis, become arranged on a plane equidistant from the poles called the metaphase plate.
Anaphase:- The two chromosomes in each bivalent separate and migrate toward opposite poles. ... Notice that in anaphase I the sister chromatids remain attached at their centromeres and move together toward the poles.
Telophase:-The homologous chromosome pairs complete their migration to the two poles as a result of the action of the spindle. Now a haploid set of chromosomes is at each pole, with each chromosome still having two chromatids. A nuclear envelope reforms around each chromosome set, the spindle disappears, and cytokinesis follows.
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radhika105:
thanks u have given me a great information
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