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Polycistronic mesenger RNA (mRNA) usuall...

Polycistronic mesenger RNA (mRNA) usually occurs in

A

bacteria

B

prokaryotes

C

eukaryotes

D

both a and b

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The correct Answer is:
D
(d) : When a particular gene codes for a mRAN strand it is said to be monocistronic or monogenic. When several genes (cistrons) are transcribed into a single mRNA molecule, it is described as polycistronic or polygenic. Prokaryotic mRNA are polycistronic.
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NCERT FINGERTIPS-MOLECULAR BASIS OF INHERITANCE-Molecular Basis Of Inheritance
  1. Transcription unit

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  2. During transcription, the site of DNA molecule at which RNA polymerase...

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  3. Polycistronic mesenger RNA (mRNA) usually occurs in

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  4. The given figure represents the process of transcription in bacteria.

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  5. Refer to the given diagram. What does it represent ?

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  6. In transcription in eukaryotes, heterogenous nuclear RNA (hnRNA)is tra...

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  7. Menthyl guanosine triphosphate is added to the 5' end of hnRNA in a pr...

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  8. Select the correct statements regarding the process of transcription i...

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  9. In eukaryotes, the process of processing of primary transcript involve...

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  10. Match column I and II and select the correct option from the given cod...

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  11. Identify A, B, C and D in the given diagram of mRNA.

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  12. The fully processed hnRNA is called as (i) and is transproted out of t...

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  13. Refer to the given sequence of steps and select the correct option.

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  14. The three codons which result in the termination of polypeptide chain...

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  15. Match column I and II and select the correct option from the given cod...

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  16. Amino acids which are specified by single codons are

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  17. mRNA overset(AUG UUU AUG C CU GUU UCU UA A)to Polypeptide Met-Phe-Me...

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  18. mRNA overset(AUG UUU AUG C CU GUU UCU UA A)to Polypeptide Met-Phe-Me...

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  19. Which out of the following statement is incorrect ?

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  20. Some amino acids are coded by more than one codon, hence the genetic c...

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