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Purines have nitrogen atoms at position...

Purines have nitrogen atoms at _____ positions.

A

1,3,7 and 9 position

B

1,3,5 and 7 position

C

1,2,6 and 8 position

D

1,2,4 and 6 position

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The correct Answer is:
A
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GRB PUBLICATION-THE GENETIC MATERIAL-DNA REPLICATION
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  2. If the total amount of adenine and thymine in a double stranded DNA is...

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  3. Purines have nitrogen atoms at positions.

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  4. During Meselson and Stahl's experiments, heavy DNA was distinguished f...

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  5. DNA gyrase, the enzymes that participates in the process of DNA replia...

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  6. Given below is a sample of a portion of DNA strand giving the base seq...

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  7. The double helical model of the DNA was proposed by Watson and Crick b...

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  8. The pyrimidine base which confers additional stability to DNA over RNA...

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  9. In Hershey and Chase experiments , radioactive .^(32)P was used to cul...

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  10. The unequivocal proof of DNA as the genetic material came from the stu...

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  11. In a double standed DNA, the sequence of nucleotides in one strand is ...

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  12. c-DNA is a :

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  13. During DNA replication, the torques are relieved by the enzyme :

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  14. The given diagrammatic representation shows one of the categories of s...

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  15. Read the following statements and choose the correct option. A. Nitr...

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  16. Match the coloumn I with column II and choose the correction option :

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  17. A-DNA is :

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  18. Okazaki fragments are :

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  19. The sequence of nitrogenaous bases in one strand of DNA are 3' TAC GCG...

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  20. The double helix of DNA is made of polynucleotide chains where backbon...

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