Home
Class 12
BIOLOGY
Assertion : Untranslated regions are s...

Assertion : Untranslated regions are sequences of RNA before initiation codon and after termination codon.
Reason : Untranslated regions provide stability to mRNA and also increase translational efficiency.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

if both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
b
(b)
Promotional Banner

Topper's Solved these Questions

  • MICROBES IN HUMAN WELFARE

    NCERT FINGERTIPS|Exercise Microbes In Human Welfare|138 Videos

  • ORGANISMS AND POPULATION

    NCERT FINGERTIPS|Exercise Organisms And Population|175 Videos

Similar Questions

Explore conceptually related problems

Assertion : An mRNA has both initiation codon and termination codon. Reason : It specifies only a single polypeptide or number of them.

Assertion (A): The process of translation or protein synthesis 'terminates when the A-site of ribosome encounters a termination codon. Reason (R): A release factor liinds to the stop codon and translation is terminated.

Assertion : A monocistronic mRNA can produce several types of polypepitude chains . Reason : The terminator codon is present on the mRNA.

Assertion (A): Termination codons or stop codons are UAA, UAG and UGA. Reason (R): Stop codons represent termination of translation.

Assertion A single-strand of mRNA is capable of forming different polypeptide chains Reason Termination codons occur in mRNA

Consider the following statements with respect to translation. A. Translation refers to the process of polymerisation of ribonucleotides. B. The site of translation (protein synthesis) is ribosomes. (D) An m-RNA also has untranslated regions (UTR) that are not translated. Of the above statements :

Consider the following statements w.r.t. a translational unit in mRNAa. a . UTRs are present after start codon and before stop codons. b. It is the sequence of RNA that is flanked by start codon (AUG) and stop codon. C. It codes for a polypeptide. d. UTRs are needed for efficient translation process.

Assertion A non-overlapping code means that a base in mRNA is not used for different codons Reason In translating mRNA molecules, the codons do not overlap but are read sequentially

Assertion. A single mRNA strand is capable of forming a number of different polypeptide chains. Reason. The mRNA strand has terminator codons.

Mark these statement as true (T) OR false (F) and select the correct option In eukaryotes,only one type of DNA-dependent RNA polymerase transcribes all types of RNAs The human gemone has approximately 30000 genes The untranslate regions (UTRs) of m-RNA are required for efficient translation process.

NCERT FINGERTIPS-MOLECULAR BASIS OF INHERITANCE-Molecular Basis Of Inheritance
  1. The RNA polymerase holoenzyme transcribes

    Text Solution

    |

  2. If the base sequence of a codon in mRNA is 5'-AUG-3', the sequence of ...

    Text Solution

    |

  3. The amino acid attaches to the tRNA at its

    Text Solution

    |

  4. To initiate translation, the mRNA first binds to

    Text Solution

    |

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

    Text Solution

    |

  6. Assertion : The sugar phosphatebackone of two chains in DNA double hel...

    Text Solution

    |

  7. Assertion : In Griffith's experiment, a mixture of heat-killed virule...

    Text Solution

    |

  8. Assertion : DNA isconsidered to be better gentic material than RNA for...

    Text Solution

    |

  9. Assertion : The mechanism of DNA replication is semi-conservative in n...

    Text Solution

    |

  10. Assertion : Synthesis of daughter or new srand accurs continuously al...

    Text Solution

    |

  11. Assertion : Template or antisense strand , having 3' rarr 5' polarity...

    Text Solution

    |

  12. Assertion : Polycistronic mRNA, found in prokaryotes, specify a number...

    Text Solution

    |

  13. Assertion : Eukaryotic mRNA requires post transcription processing for...

    Text Solution

    |

  14. Assertion : A change in nitrogen bass at the third position of a codo...

    Text Solution

    |

  15. Assertion : tRNA recognises its corresponding codon in mRNA. Reason...

    Text Solution

    |

  16. Assertion : Untranslated regions are sequences of RNA before initiat...

    Text Solution

    |

  17. Assertion : The predominant site for control ofgene expression in pro...

    Text Solution

    |

  18. Assertion : Lac operon is a repressible operon. Reason : The produc...

    Text Solution

    |

  19. Assertion : Repetitive sequences make up very large portion of human g...

    Text Solution

    |

  20. Assertion : When the DNA sequences of two people are cut using the sam...

    Text Solution

    |