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Molecular Basis of Inheritance

Short Answer Type

21. Name the three stop codons.

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One Word Answers

22. Name the initiator codon.

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Short Answer Type

23. What is the exception to the general rule that DNA is the genetic material in all organisms ? Give evidences that support these exceptions.

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24. What do you mean by a term ‘replication fork’ ?

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25. During DNA replication the nature of replication on 5’-3’ strand and 3'-5' strand is?

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26. Name the nitrogen bases present in RNA.

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27. What are the essential requirements of the genetic materials ?

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Long Answer Type

28. List the various evidences for genetic role of DNA

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Short Answer Type

29. What does transformation experiment prove ?

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30. What is the contribution of Avery, MacCleod and McCarty ?

Avery, Macleod and McCarty determined the biochemical nature of ‘transforming principle’ in Griffith's experiment. They discovered that proteases and RNases do not effect tranformation whereas DNases affects and gave proof that active component was DNA and not the RNA or proteins in transformation.

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