According to Chargaff’s Rule, if a segment of DNA contains 60 cytosine bases out of a total of 300 bases how many thymine bases are in the s

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According to Chargaff’s Rule, if a segment of DNA contains 60 cytosine bases out of a total of 300 bases how many thymine bases are in the segment?

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Thu Hương 3 years 2021-08-23T13:14:07+00:00 1 Answers 0 views 0

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  1. taiduc
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    2021-08-23T13:15:35+00:00
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    Answer:

    90 Thymine bases

    Explanation:

    Chargaff’s rules states that in the DNA of any organism, the amount of purine and pyrimidine bases must be in a 1:1 ratio. This means that the amount of Adenine and Guanine bases (purines) should be equal with their complementary pairs of Thymine and Cytosine bases respectively (pyrimidines). (A = T) + (G = C) = 100

    Hence, according to this question, if there are 60 cytosine bases, this means that there will be 60 Guanine bases. 60 C + 60 G = 120 pyrimidines

    300 total bases – 120 pyrimidine bases = 180 purine bases.

    180/2 = 90 equal bases of Adenine and Thymine. Hence, Thymine bases will be 90.

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