Home
Class 12
BIOLOGY
What would happen if in a gene encoding ...

What would happen if in a gene encoding a polypeptide of 50 amino acids, `25^(th)` codon (UAU) is mutated to UA A?

A

A polypeptide of 49 amino acids will be formed

B

A polypeptide of 25 amino acids will be formed

C

A polypeptide of 24 amino acids will be formed

D

Two polypeptides of 24 and 25 amino acids will be formed

Text Solution

Verified by Experts

The correct Answer is:
C
It has seen variously that one tRNA molecule codes for more than one amino acid molecules . This is possible due to the improper pairing of third codon with the first anticodon of tRNA.
Promotional Banner

Topper's Solved these Questions

  • MINERAL NUTRITION

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise MCQs|40 Videos

  • MORPHOLOGY OF FLOWERING PLANTS

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Exercise|91 Videos

Similar Questions

Explore conceptually related problems

What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UAA ?

In a polypeptide chain of 125 amino acids, if the 25^(th) amino acid is mutated to UAA, then :-

What would happen when blood is acidic

Predict the effect if, the codon UAU coding for an amino acid at the 25^(th) position of a polypeptide of 50 amino acids, is mutated to UAA.

What would happen if human blood becomes acidic (low pH)?

A gene encoding for a polypeptide of 60 amino acids get mutated at 30^(th) codon UAU becoming UAA The result would be

What would happen if human blood becomes acidic ( low pH) ?

On translation , mRNA produce a polypeptide chain , which contains 50 amino acids. if 26^( th) codon of mRNA UUU mutated and changed to UUC , then the polypeptide chain will be

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-MOLECULAR BASIS OF INHERITANCE-EXERCISE
  1. chromosomes in a bacterial cell can be 1-3 in number and :

    Text Solution

    |

  2. In the genetic code dictionary, how many codons are used to code for a...

    Text Solution

    |

  3. What would happen if in a gene encoding a polypeptide of 50 amino acid...

    Text Solution

    |

  4. Degeneration of a genetic code is attributed to the :

    Text Solution

    |

  5. During translation initiation in prokaryotes, a GTP molecule is needed...

    Text Solution

    |

  6. Which one of the following triplet codes, is correctly matched with it...

    Text Solution

    |

  7. Exon part of m- RNA code for

    Text Solution

    |

  8. Which of the following reunites the exon segments after RNA splicing ?

    Text Solution

    |

  9. Nucleus of a donor embryonal cell/ somatic cell is transferred to a an...

    Text Solution

    |

  10. Which statements is correct for bacterial transduction ?

    Text Solution

    |

  11. In DNA percentage of thymine is 20, then what is the percentage of gua...

    Text Solution

    |

  12. Jacob and Monod studied lactose metabolism in E. coli and proposed ope...

    Text Solution

    |

  13. In E.coli during lactose metabolism, repressor binds to :

    Text Solution

    |

  14. Sequence of which of the following is used to know the phylogeny ?

    Text Solution

    |

  15. In negative operon

    Text Solution

    |

  16. In which direction mRNA is synthesises on DNA template ?

    Text Solution

    |

  17. Gene and cistron words are sometimes used synonymously because

    Text Solution

    |

  18. E. coli about to replicate was placed in a medium containing radioacti...

    Text Solution

    |

  19. Due to discovery of which of the following in 1980 ' s the evolution w...

    Text Solution

    |

  20. Who proposed the 'Signal hyothesis' meant for the biosynthesis of secr...

    Text Solution

    |