Difference between Thymine and Cytosine
Difference between Thymine and Cytosine are in tabular form below –
No. | Thymine |
Cytosine |
Definition |
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1. | A basic building block of DNA or one of the nitrogenous bases which pairs with adenine. | A basic building block of DNA or one of the nitrogenous bases which pairs with guanine. |
Molar mass |
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2. | 126.1133 g/mole is the molar mass of thymine. | 111.1 g/mol is the molar mass of cytosine. |
Hydrogen bonds |
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3. | The two hydrogen bonds are formed with adenine by the thymine. | The three hydrogen bonds are formed with guanine by cytosine. |
Presence |
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4. | The thymine is present in only RNA. | The cytosine is present in both RNA and DNA. |
Complementary base pair |
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5. | The complimentary base pair of thymine is adenine. | The complimentary bas pair of cytosine is guanine. |
Heterocyclic aromatic ring |
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6. | Two keto groups are present in the heterocyclic aromatic ring. | One keto group is present in the heterocyclic aromatic ring. |