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Molecular Basis Of Inheritance

Question

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What will be the percentage of guanine in a DNA molecule having 20% adenine?

20%

30%

40%

60%

Solution

B.

30%

According to Chargaff's rule,

A (Adenine)= T (Thymine); C (Cytosine)= G (Guanine)

If the % of A = 20 %

Then, T is also 20 % or A + T = 40 %

Therefore, G + C = 100 - 40 = 60%

Hence, G = 30%

Some More Questions From Molecular Basis of Inheritance Chapter

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List three components of transcription unit.

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