HEREDITY
MUTATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If Chargaff found that a sample of DNA has 30% THYMINE, how much GUANINE would he have calculated to be there?
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30%
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20%
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80%
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60%
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Explanation:
Detailed explanation-1: -So, for this DNA sequence, C + G = 60%. The remaining 40% of the sequence must consist of A-T pairs (adenine-thymine). Therefore, 20% of the sequence is made up of adenine, and 20% of the sequence is made up of thymine.
Detailed explanation-2: -Answer and Explanation: A double-stranded DNA molecule with 20% thymine would contain 30% guanine.
Detailed explanation-3: -The percentage of guanine is 20%.
Detailed explanation-4: -If 30 percent of an organism’s DNA is thymine, then 20 percent is guanine. Because thymine and adenine are bonded together, their numbers are equal. The sum of cytosine and guanine is also the same.
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