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Which of the following nitrogenous base ...

Which of the following nitrogenous base is double ringed ?

A

Guanine

B

Thymine

C

Uracil

D

Cytosine

Text Solution

Verified by Experts

The correct Answer is:
A
Guanine and adenine (purine) nitrogenous base are double ringed.
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A2Z-MOLECULAR BASIS OF INHERITANCE-Section C PREVIOUS YEARS' EXAMINATION QUESTIONS (NEET/AIPMT Question)
  1. Which of the following are the purine nucleotides ?

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  2. The following is not a character of RNA

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  3. Which of the following nitrogenous base is double ringed ?

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  4. In DNA finger printing, DNA bridization with the help of specific DNA ...

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  5. Who proved experimentally that DNA is genetic material ?

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  6. Which one of the following is the starter codon ?

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  7. Which of the following is required as inducer(s) for the expression of...

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  8. Which of the following statements is not true for cancer cells is rela...

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  9. Which of the following is not required for any of the techniques of DN...

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  10. A complex of ribosomes attached to a single strand of RNA is known as

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  11. Taylor conducted the experiments to provide semiconcervative mode of c...

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  12. The equivalent of a structural gene is

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  13. Which of the following r-RNAs acts as structural RNA as well as ribozm...

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  14. A molecule that can act as a genetic material must fulfill the traits ...

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  15. DNA-dependent RNA polymerase catalyzes transcription on one strand of ...

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  16. The final proof for DNA as the genetic material came from the experime...

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  17. DNA fragments are

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  18. If there are 999 bases in RNA that codes for a protein with 333 amino ...

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  19. During DNA replication, Okazaki fragments are used to elongate :

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  20. Which of the following RNAs should be most abundant in animal cell ?

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