THE MOLECULAR BASIS OF INHERITANCE
STRUCTURE OF NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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22%
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28%
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44%
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56%
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Detailed explanation-1: -The sum of all four percentages must equal 100%. We know that the sample is 22% adenine; this tells us it is also 22% thymine. 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.
Detailed explanation-2: -Answer and Explanation: If a double strand is 22% guanine, then automatically we know that there will be 22% cysteine.
Detailed explanation-3: -The composition of DNA varies from one species to another. Since adenine is 20%, then thymine is 20% as well. The total of both is 40%. From 100 remains 60% which is divided equally between guanine and cytosine, so each is 30%.
Detailed explanation-4: -The correct answer: A DNA molecule with 24% guanine would have 26% adenine.