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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 ?

Essential requirements of genetic material

1. A genetic material should be able to express itself and in the form of Mndelian Characters'.

2. It should be capable to make its own copies (Replication).

3. It should also have mechanism to undergo mutations that will generate variation and lead to evolution.

4. It should be stable chemically and structurally.

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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 ?

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