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Which of the following is not relevant t...

Which of the following is not relevant to the structure of double helical DNA?

A

The helix makes one complete spiral turn every 34 Å

B

The diameter of the helix is 20 Å

C

The distance between adjacent nucleotide is 3.4 Å

D

Each strand of helix has a back bone made up of alternating ribose sugar and phosphate.

Text Solution

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The correct Answer is:
D
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NEW JOYTHI PUBLICATION-MOLECULAR BASIS OF INHERITANCE-PREVIOUS YEAR COMPETITIVE EXAM QUESTIONS
  1. Choose the wrong statement in the process of protein synthesis.

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  2. In regulation of gene expression in prokaryotes I. Lactose acts ...

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  3. Which of the following is not relevant to the structure of double heli...

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  4. The length of the haploid content of human DNA is

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  5. Meselson and Stahl experiment proved

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  6. The basis of DNA fingerprinting is

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  7. Select the correct bases of DNA, RNA and amino acid of beta chain resu...

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  8. When a segment of a chromosome breaks and later rejoins after 180^@ r...

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  9. What would be the correct base sequence in mRNA for the given DNA stra...

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  10. In DNA of certain organisms, guanine constitutes 20% of the bases. Wha...

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  11. The process of transformation was discovered by

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  12. Which of the following codons has no tRNA?

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  13. Which one of the following nitrogenous base is seen only in RNA?

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  14. Ti plasmids used in genetic engineering is obtained from

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  15. The enzyme used to join the DNA fragments is

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  16. Which of these is used as vector in gene therapy for SCID?

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  17. Name the longest gene.

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  18. In the Lac Operon system, beta-galactosidase is coded by

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  19. Match the codons with their respective amino acids and choose the corr...

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  20. In bacteria, the formation of peptide bond during translation is effec...

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