BIOLOGY
NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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14%
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28%
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36%
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64%
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Detailed explanation-1: -Therefore, Guanine would be 20% and total of G+C = 40% and hence A+T would be 60% that is 30% each.
Detailed explanation-2: -Answer and Explanation: The DNA of an organism is studied and found to contain 14% guanine. This organism should have 36% thymine and 14% cytosine in its DNA. The proportion of guanine is the same as cytosine and that of thymine is the same as adenine due to complementary base pairing rules.
Detailed explanation-3: -According to Chargaff’s rule in a DNA molecule A = T and G = C and A + G + C + T = 100%. Here cytosine (C) is 18% hence G = 18% ∴ A + T = (100 – 36)% ∴ A + T = 64% ∴ A = 32% Q.
Detailed explanation-4: -Therefore, the answer is T = 30%, A = 30%, G = 20% and C = 20%.
Detailed explanation-5: -Since cytosine and guanine are present in equal amounts, we can simply divide their sum by 2. The final composition is 22% adenine, 22% thymine, 28% cytosine, and 28% guanine.