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The double helix of DNA is made of polyn...

The double helix of DNA is made of polynucleotide chains where backbone constituted by sugar-phosphate and bases are projected `:`

A

inside

B

outside

C

one base inside and the other outside

D

bases remain in line of sugar - phosphate

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The correct Answer is:
A
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The double helix model of DNA was proposed by

The salient feature of DNA are - (i) It is made of two polynucleotide chain (ii) Back bone is constituted by sugar and nitrogen base (iii) Two chain hacve parallel polarity (iv) Bases in two strands are paired through H-bonds (v) The two chain are coiled in a left handed fashion

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GRB PUBLICATION-THE GENETIC MATERIAL-DNA REPLICATION
  1. Okazaki fragments are :

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

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

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  4. Match the following and choose the correct combination from the option...

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  5. Identify the wrong statement about DNA.

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  6. Which property among these listed below is not a criteria for a molecu...

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  7. Choose the correct statement.

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  8. Who gave semiconservative mode of DNA replication for the first time i...

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  9. The result of which of the following reaction experiments carried out ...

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  10. A stretch of DNA consisting of 10-20 bases is most appropriately be ca...

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  11. In sea urchin DNA, which is double stranded, 17% of the bases were sho...

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  12. The given organic compound is a diagrammatic representation of :

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  13. In the ribose of RNA, unlike DNA, every nucleotide residue has an addi...

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  14. Nucleosome core is intimately associated with

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  15. Nucleosome contains :

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  16. During polynucleotide synthesis by the following enzymes, in which cas...

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  17. A molecule to act as a genetic material has the following properties. ...

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  18. Choose the correct statement among the following :

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  19. The nitrogen base found only in DNA is also called

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  20. In griffith's experiment, the conversion of R-type to S-type of Diploc...

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