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UNIT 6 - Coggle Diagram
UNIT 6
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Three major types of mutations may occur in our DNA deletion insertion and substitution deletion is where one of the DNA codes
isn't there even though it's supposed to be there substitution mutation is when a DNA code is switched out with another that doesn't fit the original cord the insertion mutation is when the DNA code is added on to the original DNA code making it extra long and having it have extra code in it mutations are also the reason why we may get cancer because of the tumor suppressor genes being mutated
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Mitosis
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prophase is the first phase in this phase DNA replicates the chromosome so that there are two sister chromatids and the nucleus starts to disappear
the second phase is metaphase where spindle fiber starts to form and attach to the Chromosomes ready to split them by this time the nucleus is completely gone
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Checkpoints
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the first checkpoint is in between G1 and S phase in this checkpoint it checks for most of the basic stuff like cell size nutrients growth factors and DNA damage
the second checkpoint is near the end of G2 in the beginning of mitosis. this checkpoint mainly checks for more specific things like the DNA is replicated correctly and if there are damages to any of the replicated DNA
the final checkpoint is located in metaphase where it checks the spindle fibers and whether they are working correctly and if they have successfully attached to the chromatids
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