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E. coli cell grown on ""^(15)N medium ar...

E. coli cell grown on `""^(15)N` medium are transferred to `""^(14)N` medium and allowed to grow for two generations. DNA extracted from these cells is ultracentrifuged in a cesium chloride ensity gradient. What density distribution of DNA would you expect in this experiment?

A

One high and one low density band.

B

One intermediate density band.

C

One high and one intermediate density band.

D

One low and one intermediate density band.

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  2. The total number of nitrogenous bases in human genome is estimated to ...

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  6. Which of the following statements about DNA replication is not correct...

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  7. Which of the following statements is not true about DNA replication in...

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  8. The first codon to be deciphered was "" which codes for "".

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  9. Meselson and Stahl's experiment proved …………………

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  10. Ribosomes are composed of two subunits, the smaller subunit of a ribos...

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  11. An operon is a:

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  12. When lactose is present in the culture medium:

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  14. Radiocative isotopes used in Hershey and Chase experiment.

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  15. Who proposed one gene-one enzyme hypothesis?

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  16. Name the person who isolated nucleic acid from cell nuclei

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  17. Who introduced the classical concept of gene?

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  18. Nucleotide is composed of

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  19. Double helix model for DNA was proposed by

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  20. "" demonstrated that RNA is the genetic material in RNA containing vir...

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