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How many spirals (twins or helices) a DN...

How many spirals (twins or helices) a DNA of 2000 base pairs will have?

A

2000

B

4000

C

200

D

45.5

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The correct Answer is:
C
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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. All of the following would be found in a eukaryotic cell except

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  2. Which of the following is transcribed and then translated to form a pr...

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  3. How many spirals (twins or helices) a DNA of 2000 base pairs will have...

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  4. An prokaryotic gene typically has all of the followings features excep...

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

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

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

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

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

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

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  11. The example of inducible operon is

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  12. In trp operon, the corepressor is

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

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

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

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  16. Gene controls

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

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

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

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

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