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

If Meselson and Stahl's experiment is continued for four generations inbacteria, the ratio of 15N/15N: 15N/14N: 14N/14N containing DNA in thefourth generation would be:

A

`1 : 1 : 0`

B

`1 : 4 : 0`

C

`0 : 1 : 3`

D

`0 : 1: 7`

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The correct Answer is:
B
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OSWAAL PUBLICATION-MOLECULAR BASIS OF INHERITANCE -TOPIC-2: Multiple Choice Questions
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  2. With regard to mature mRNA in eukaryotes :

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  3. The human chromosome with the highest and least number of genes in the...

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  4. Who amongst the following scientists had no contribution in the develo...

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  5. DNA is a polymer of nucleotides which are linked to each other by 3-5'...

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  6. Discontinuous synthesis of DNA occurs in one strand, because :

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  7. Which of the following steps in transcription is catalysed by RNA poly...

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  8. Control of gene expression takes place at the level of:

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  9. Regulatory proteins are the accessory proteins that interact with RNA ...

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  10. Which was the last human chromosome to be completely sequenced?

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  11. Which of the following are the functions of RNA?

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  12. While analysing the DNA of an organism a total number of 5386 nucleoti...

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  13. In some viruses, DNA is synthesised by using RNA as template. Such a D...

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

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  15. If the sequence of nitrogen bases of the coding strand of DNA in atran...

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  16. The RNA polymerase holoenzyme transcribes

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  17. If the base sequence of a codon in mRNA is 5 AUG-3', the sequence of t...

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  18. The amino acid attaches to the tRNA at its :

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  19. To initiate translation, the mRNA first binds to :

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

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