The ratio of the number of ketonic groups in cytosine, thymine and uracil is:

1: 2 : 2

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2 : 1 : 2

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2 : 2 : 1

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1 : 1 : 1

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Solution

The correct option is B 1: 2 : 2
As evident from the image, the ratio of the number of ketonic groups in cytosine, thymine and uracil is $1 : 2 : 2$
Hence, option A is correct.

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Similar questions

Group the following as nitrogenous bases and nucleosides adenine, Cytidine, Thymine, Guanosine, Uracil and Cytosine.

Statement 1: The four nitrogen bases in a DNA molecule are guanine, thymine adenine, cytosine.

Statement 2: Where adenine and thymine are purines and guanine and cytosine are pyrimidines.

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