meiosis 1 and 2
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Mieosis slideshowTRANSCRIPT
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Meiosis 1 and 2
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InterphaseDiploid cell
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Prophase IChromosomes condensing
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Prophase ISpindle fibres start to form
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Prophase ISpindle fibres start to form, chromosomes fully condensed
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Prophase IThe chromosomes are crossing over, and exchanging DNA
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Prophase IThe nuclear envelope dissolves,
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Prophase IThe chromosomes are ready, with a bit of each other’s dna
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Prophase IThe chromosomes are ready, with a bit of each other’s dna
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Metaphase IThe chromosomes are ready, with a bit of each
other’s DNA. The spindle fibres are ready to attach
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Metaphase I
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Metaphase IThe spindle fibres have attached to the chromosomes and the
centromeres are about to cleave.
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Anaphase Ithe chromosomes have split and are pulling to each end
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Anaphase 1, the chromosomes have moved to each end, Cytokinesis is
beggining
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Anaphase I is almost over and Cytokinesis is almost done
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Telophase I, the nuclear envelope reforms, and the chromosomes start dissolving.
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Telophase I, the nuclear envelope is complete, the chromosomes will dissolve soon
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Telophase I, the nuclear envelope is complete, the chromosomes will dissolve soon
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Telophase I, the nuclear envelope is complete, the chromosomes will dissolve soon. The Chromosomes will build their sister
chromatids, and the cell will prepare to split
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Interkenesis, the cells rest, and produces proteins.
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Interkenesis
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Interkenesis
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Interkenesis
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Prophase IIthe nuclear membrane dissolves again, but there is no sharing of
dna this time
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Prophase IIthe nuclear membrane dissolves again, but there is no sharing of
dna this time
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Metaphase II, the chromosomes have aligned themselves.
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Metaphase II, the chromosomes are aligned
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Metaphase II, but the lower cell is going through Anaphase II, the chromosomes are moving to each end of the cell
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Anaphase II, the chromosomes are moving to each end of the cell
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Anaphase II, the chromosomes are moving to each end of the cell
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Anaphase II, with cytokinesis beginning
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Telophase II, the cell’s nuclear membrane is reforming, and the chromosomes are dissolving
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Cytokinesis and Telophase II complete, 4 haploid cells are now ready.