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10 Cards in this Set
- Front
- Back
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Chromosomes
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➢ Long strand of DNA
➢ Lots of genes ➢ Regulatory info. (info on how to keep cells/life going) ➢ Humans have 46 in ea. Cell |
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Histones
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➢ Type of proteins
➢ DNA wraps around ➢ Help compact/condense DNA |
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Chromatids
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➢ Equal sides of X shaped chromosome
➢ Same genes on each side/chromatid |
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Chromatin
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➢ Loose form of DNA
➢ Kinda’ like spaghetti noodles on a plate |
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Centromere
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➢ Mid point of replicated chromosome that holds chromatids together
➢ Looks kinda’ pinched in |
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Telomeres
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➢ Ends of chromosomes (Tops & Bottoms)
➢ Repeating *nucleotides ➢ No genes ➢ Prevent chromosomes from attaching end to end ➢ Small section of telomere lost every time DNA copied |
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Nuclotides
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➢ monomers (repeating units) of DNA
➢ There are 4 ➢ Adenine, Thymine, Cytosine, Guanine (A,T,C, & G) ➢ In class - long paper DNA molecule shows them as green, pink, blue, & gold |
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Prophase
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➢ Chromatin condenses into Chromosomes
➢ Nuclear envelope disintegrates ➢ Centrioles move to opposite sides of cell ➢ Spindle Fibers (S.F.) form/appear |
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Metaphase & Anaphase
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Meta:
➢ S.F. move the chromosomes to the Middle of the cell Ana: ➢ Chromatids pulled apart by S.F. & pulled to opposite sides of cell (Once chromatids separated → now called chromosomes) |
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Telophase
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PRETTY MUCH REVERSE OF PROPHASE …
➢ Chromosomes unwind/unravel into Chromatin ➢ Nuclear envelopes form (2 of them) ➢ Centrioles go away ➢ Spindle Fibers (S.F.) disappear/disintegrate |
