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Experiments using N15 (heavy nitrogen) t...

Experiments using N15 (heavy nitrogen) to confirm the semiconserative replication of DNA were carried out by

A

Meselson and Stahl

B

Hershey and Chase

C

Beadle and Tautum

D

Watson and Crick

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A
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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. Who suggested that an intermediate RNA molecule would be needed to rea...

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  2. One-gene-one enzyme hypothesis was proposed by :-

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  3. Experiments using N15 (heavy nitrogen) to confirm the semiconserative ...

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  4. The minimum length of cistron in base pair, which synthesis a polypept...

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  5. The transcription of cluster of genes coding for protein is controlled...

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  6. The example of inducible operon is

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  7. In trp operon, the corepressor is

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  8. How many nucleotides are found in one spiral of B-DNA?

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  9. When mRNA is synthesised on DNA, the unwanted DNA regions are removed ...

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  10. Because most of the amino acids are represented by more than one codon...

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  11. Gene controls

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  12. The sequences of nucleotides in yeast, a little away from the starting...

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  13. Aporepressor is inactive repressor in Tryptophan repressible operon sy...

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  14. During protein synthesis, a ribosome moves from 5' to 3' end of mRNA t...

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  15. The operator gene of lac operon is ' turned on ' when lactose molecule...

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  16. During transcriptions, the RNA that forms from DNA is

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  17. Name the RNA type which helps in the processing of rRNA in the nucleus

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  18. The DNA strand that has the polarity 3'-5' and acts as a template, is ...

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  19. Process of codon recognition occur during

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  20. The ribosome acts as a catalyst for the formation of

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