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mitosis and meiosis - Coggle Diagram
mitosis and meiosis
meiosis
diploid- cell with TWO of each kind of chromosome.(each parent) haploid- a cell with ONE of each kind of chromosome
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anaphase 1- spindle fibers attach to the centromeres. chromosomes separate and move to opposite sides.
telophase 1- spindle fibers break down, chromosomes uncoil. cytoplasm divides, another cell division is needed for the chromosomes to reduce.
mitosis
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prophase- has chromatids, where a centromere connects the halves. Spindle fibers form and centrioles move to the opposite sides. Nuclear membrane breaks down
metaphase- the centromeres line up in the middle at the metaphase plate. eventually each chromatid is attached to a spindle fiber.
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telophase- spindle fibers break up, and the membrane starts to form. A furrow develops between the pairs of chromosomes.
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interphase
when the cell grows, and organelles double before splitting the nucleus. The cell is in interphase for most of their life.
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meiosis 2
Prophase II- chromosomes line up, and spindle fibers start to form.
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Anaphase II- centromeres split, sister chromatids separate to opposite sides.
Telophase II- nuclei reforms, spindle fibres disappear, and cytoplasm divides.
chromosomes- duplicate during mitosis. tightly packed dna. gets tangled into chromatin- then packaged into chromosome.
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crossing over- exchange of genetic material with non-sister chromatids in prophase 1. makes new allele combos