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19 April, 21:11

If the percentage of thymine is 30% what would the percentage of cytosine be

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  1. 19 April, 23:09
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    We use Chargaff's rule.

    [A] + [G] = [C] + [T]

    [A] + [G] + [C] + [T] = 100%

    A is Adenine, G is Guanine, C is cytosine, T is Thymine.

    Adenine always pairs with Thymine.

    Guanine always pairs with Cytosine

    So if Thymine is 30% then Adenine is 30% → 60% total

    Therefore 100% - 60% = 40%

    40% is shared equally among Cytosine and Guanine

    Therefore Cytosine will be 20% and Guanine 20%

    Cytosine is 20%
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