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1. Name the genetic material for majority of organisms.

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2. List the function of RNA.

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3. How many nucleotides are present in a bacteriophage

ϕ

x 174.

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4. List the number of base pairs in :

(i) lambda bacteriophage

(ii) E.coli and

(iii) haploid content of human DNA.

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5. Comment two chains of DNA have antiparallel polarity.

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6. What is the difference between DNAs and DNAase ?

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7. Which was first genetic material ?

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8. Suggest one evidence to prove that RNA was first genetic material.

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Why was RNA unstable ?

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10. What made DNA more preferrable as genetic material ?

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