THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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40%
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20%
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10%
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80%
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Detailed explanation-1: -According to Chargaff’s rule, Concentration of adenine=concentration of thymine. therefore if [A]=40% then the [T] will also be 40%.
Detailed explanation-2: -It guanine is 40% then cytosine will also be 40%. Similarly, Aenine pairs with thymihne, if guanine is 40%, the remaining 60% will be Adenine. So Theymine will also be 60%.
Detailed explanation-3: -Therefore, Guanine would be 20% and total of G+C = 40% and hence A+T would be 60% that is 30% each. Hence, option C is correct answer.
Detailed explanation-4: -In the DNA structure, adenine base always pairs with thymine and cytosine always pairs with guanine. If 10% of the bases in a DNA are adenine, 10% of this DNA molecule must be thymine. The remaining 80% will be made up of 40% cytosine and 40% guanine since the bases pair with each other leaving a ratio of 1:4.