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If Meselson and Stahl's experiment is co...

If Meselson and Stahl's experiment is continued for four generations in bacteria, the ratio of `overset(15)N//overset(15)N: overset(15)N//overset(14):overset(14)//overset(14)N` containing DNA in the fourth generation would be

A

0.042361111111111

B

0.044444444444444

C

0.00072916666666667

D

0.00077546296296296

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The correct Answer is:
D
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If Meselson and Stahl's experiment is continued for four generations in bacteria, the ratio of overset(15)N//overset(15)N: overset(15)N//overset(14)N:overset(14)N//overset(14)N containing DNA in the fourth generation would be

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ARIHANT NEET-GENE, ITS EXPRESSION AND REGULATION-Chapter Exercise (A) Taking it together (Assorted questions of the Chapter for Advanced Level Practice
  1. Which enzyme is responsible for the synthesis of tRNA

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  2. The replication of DNA in eukaryotes commences from

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  3. If Meselson and Stahl's experiment is continued for four generations i...

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  4. In E. coli, the lac operon gets switched on when

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  5. Which of the following are the functions of RNA

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  6. The RNA polymerase holoenzyme transcribes

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  7. Discontinuous synthesis of DNA occurs in one strand, because

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  8. With regard to mature mRNA in eukaryotes

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  9. When TMV-RNA is used for infection, the amino acid sequence of the coa...

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  10. Which of the following is not true for an anticodon?

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  11. In E. coli, tryptophan switches off the trp operon by

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  12. A bacterium with completely radioactive DNA was allowed to replicate i...

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  13. RNA and DNA were artificially synthesised in vitro by

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  14. There are 64 codons in genetic code dictionary because

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  15. A songle anticodon can recognize more than one codon of m-RNA. This ph...

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  16. What becomes established from the wooble hypothesis

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  17. In order to enable a chemical to serve as a genetic material , it is e...

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  18. In the absence of beta- galactosides, transcription of

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  19. The complex CAP-c-AMP, which increases the affinity of RNA polymerase ...

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  20. If following is the sequence of nucleotides in mRNA , predict the sequ...

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