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How is the DNA better genetic material t...

How is the DNA better genetic material than RNA?

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(i) DNA chemically is less reactive and structurally more stable as compared to RNA.
(ii) The two strand separated by heating come together when appropriate conditions are provided. But OH. group present at every nucleotide in RNA is a reactive group and make RNA labile and easily degradable.
(iii) The presence of thymine at the place of uracil confers additional stability to DNA.
(iv) DNA and RNA are able to mutate. RNA being ustable, mutates at a faster rate,
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BETTER CHOICE PUBLICATION-MOLECULAR BASIS OF INHERITANCE-MOST EXPECTED QUESTIONS
  1. Differentiate between Euchromatin and Heterochromatin.

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  2. Why do histones have the charge and give their use.

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  3. How is the DNA better genetic material than RNA?

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  4. Retroviruses do not follow central dogma. Comment.

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  5. Why is DNA molecule more stable genetic material than RNA? Explain.

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  6. RNA is the first genetic material. Highlight some of the facts and poi...

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  7. A microbiologist found that some bacteria infected by phages, had deve...

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  8. (a) Draw a neat labelled diagram of a nucleosome. (b) Mention what e...

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  9. (a) Explain with the help of schematic representation the lac operon o...

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  10. With the help of schematic structure, explain the transcription unit.

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  11. List any four major goals of Human Genome project.

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  12. Explain giving reasons that RNA is the first genetic material.

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  13. (a) Why is DNA considered a better genetic. (i) Which one of an intr...

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  14. How is the process of m-RNA synthesis different in eukaryotes than in ...

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  15. (a) Genetic codes can be universal and degenerate. Write about them, g...

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  16. How an inducible operon differs from repressible operon?

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  17. Enlist the role of following in protein synthesis (i) m-RNA, (ü)r-RN...

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  18. Differences between Inducible and Repressible Operon ?

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  19. How did Hershey and Chase prove that DNA is the hereditary material? E...

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  20. How did Hershey and Chase differentiate between DNA and protein in the...

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