INTRODUCTION TO MICROSCOPY CELL BIOLOGY
DIFFERENTIATED CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If a DNA molecule is composed of 20% Adenine, what percent of the molecule is Guanine?
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20%
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60%
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30%
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50%
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Explanation:
Detailed explanation-1: -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-2: -If a DNA sample is made up of 30% guanine, then it must contain an equal amount (30%) of cytosine (C). So, for this DNA sample, C + G = 60%. The remaining 40% of the sequence must consist of A-T pairs (adenine-thymine). Therefore, 20% of the sample is made up of adenine, and 20% of the sample is made up of thymine.
Detailed explanation-3: -In a typical DNA molecule, the proportion of thymine is 30.
There is 1 question to complete.