GENETICS AND EVOLUTION
MOLECULAR BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If a cell contains 26% thymine, what percentage do the other three bases make up of the organism’s DNA?
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A-26% = T-26%G-24% = C 24%
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A-26% = C-26%T-24% = G-24%
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A-24% = T-26%G-26% = C 24%
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G-26% = T-26%A-24% = C 24%
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Explanation:
Detailed explanation-1: -If a double stranded DNA has 20% Thymine, the percentage of Guanine in the DNA. No worries!
Detailed explanation-2: -Therefore the base percentage of GC is 54% in the whole DNA sequence.
Detailed explanation-3: -Option A is correct ans Thymine −30%, Guanine −20%, Cytosine −20% (Chargaffs nitrogen base pairing rule which states that amount of Adenine is equal to Thymine and Guanine is equal to Cytosine.
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