THE MOLECULAR BASIS OF INHERITANCE
DNA REPLICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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20%
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60%
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30%
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40%
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Detailed explanation-1: -Answer: There would be 20% Cytosine. Adenine (30%) = Thymine (30%) Guanine (20%) = Cytosine (20%)
Detailed explanation-2: -If there is 20% cytosine, there is also 20% guanine. This means that 40% of the DNA consists of cytosine and guanine, and therefore 60% contains thymine and adenine. Since there must be equal amount of thymine and adenine, approximately 30% of each would be found in this DNA molecule.
Detailed explanation-3: -Answer and Explanation: A double-stranded DNA molecule with 20% thymine would contain 30% guanine.
Detailed explanation-4: -Thymine – 30%, Guanine – 20%, Cytosine – 20%. Chargaff’s nitrogen base pairing rule which states that amount of adenine is equal to thymine and guanine is equal to cytosine.
Detailed explanation-5: -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%.