Thymine is

A

5-methyuracil

B

4-methyluracil

C

3-methyluracil

D

1-methyluracil.

Text Solution

Verified by Experts

The correct Answer is:
a
Thymine, also , as 5-methyluracil, is a pyrimidine nucleobas. As the name implies, theymine by derived by methylation of uracil at the `5^(th)` carbon
Promotional Banner

Topper's Solved these Questions

  • AIIMS 2005

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

  • AIIMS 2007

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

Similar Questions

Explore conceptually related problems

" The ratio between "A" and "C" in a DNA molecule having "6" coils (turns) and "40" Thymines is "

.......................... in RNA replaces thymine in DNA.

Thymine differs fro uracil in having

Choose among the given correct pairing of nitrogen bases in a DNA. (A) Adenine with Guanine (B) Adenine with Thymine (C ) Adenine with Cytosine (D) Thymine with Guanine (E ) Guanine with Cytosine (F) Thymine with Cytosine

R.N.A. contains which of the following base, in place of Thymine of D.N.A. :-

The number of hydrogen bonds between adenine and thymine in DNA molcule are

What would be the percentage of thymine in a double stranded DNA sample, which contains 20% cytosine of the total bases ?

If the total amount of adenine and thymine in a double-stranded DNA is 60%, then the amount of guanine in this DNA will be

AIIMS PREVIOUS YEAR PAPERS-AIIMS 2006-CHEMISTRY
  1. The following sequence of reactions on A gives

    Text Solution

    |

  2. Nitrobezene of treatment with zinc dust and aqucous ammonium chloride ...

    Text Solution

    |

  3. Thymine is

    Text Solution

    |

  4. Lysine is least soluble in water in the pH range.

    Text Solution

    |

  5. Methyl-alpha-D-glucoside and methyl-beta-D-glucoside are:

    Text Solution

    |

  6. Which of the following compounds has the highest boiling point ?

    Text Solution

    |

  7. The correct increasing order of the reactivity of halides for S(N^(1))...

    Text Solution

    |

  8. The major product formed in the following reaction is CH(3)CH(Cl)CH(2)...

    Text Solution

    |

  9. Assertion: In the iodometric titration, starch is used as an indicator...

    Text Solution

    |

  10. Assertion : Nitrogen is less reactive than molecular oxygen. Reason:...

    Text Solution

    |

  11. These questions consist of two statements each, printed as Assertion a...

    Text Solution

    |

  12. Assertion: E^(@) for Mn^(3+)//Mn^(2+) is more positive than Cr^(3+)//C...

    Text Solution

    |

  13. Assertion: K2Cr2O7 is used as primary standard in volumetric analysis....

    Text Solution

    |

  14. Assertion: Silicones are hydrophobic in nature. Reason: Si-O-Si link...

    Text Solution

    |

  15. According to the tranistion state theory, for the formation of on acti...

    Text Solution

    |

  16. Assertion :- Water in liquid state is more stable than ice at room tem...

    Text Solution

    |

  17. Assertion : Sb(2)S(3) is not soluble in yellow ammonium sulphide. Re...

    Text Solution

    |

  18. Assertion (A) : Graphite is an example of tetragonal crystal system. ...

    Text Solution

    |

  19. Assertion : For the Daniel cell, Zn//Zn^(2+)||Cu^(2+)|Cu" with "E(cell...

    Text Solution

    |

  20. Assertion : Fe^(3+) ions can be used for the coagulation of As(2)S(3) ...

    Text Solution

    |