Home
Class 12
BIOLOGY
E.coil about to replicate was placed in ...

E.coil about to replicate was placed in a medium containing radioactive thymidine for five minutes. Then its was made to replicate in a normal medium. Which of following observation shall be correct ?

A

Both the strands of DNA will be radioactive

B

One strand radioactive

C

Each strand half radioactive

D

None is radioactive

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • MINERAL NUTRITION

    MBD PUBLICATION|Exercise Question Bank|75 Videos

  • MORPHOLOGY OF FLOWERING PLANTS

    MBD PUBLICATION|Exercise QUESTION BANK|186 Videos

Similar Questions

Explore conceptually related problems

The different steps of recombinant DNA technology are given below randomly. (i) Isolation of the DNA fragments or genes to be cloned (ii) Introduction of the recombinant DNA into a suitable cell (usually E. coil) called host (transformation) (iii) Multiplication/expression of the introduced gene in the host (iv) Selection of the transformed host cells, and identification of the clone containing the desired gene/DNA fragment (v) Insertion of the isolated gene in a suitable plasmid vector Which of the following represents the correct sequences of steps ?

Read the following statements and select the correct option. Statement 1 : Zoological parks are the places where wild animals are kept in protected environments under human care and which enable us to learn about their food habits and behaviour. Statement 2 : Adequate arrangements for the treatment, medication, regular check up and pathological investigations are absolutely necessary to eb made for the healt, care and upkeep of the animals.

MBD PUBLICATION-MOLECULAR BASIS OF INHERITANCE-QUESTION BANK
  1. The transfer RNA molecule in 3D appears:

    Text Solution

    |

  2. Maximum number of bases in plasmids discovered so far:

    Text Solution

    |

  3. E.coil about to replicate was placed in a medium containing radioactiv...

    Text Solution

    |

  4. Read the following statements and choose the correct option. (a) Ni...

    Text Solution

    |

  5. A mutant strain to T4-Bacteriophage, R-II, fails to lyse the E.coli bu...

    Text Solution

    |

  6. m-RNA is synthesised on DNA in template in which direction :

    Text Solution

    |

  7. Type of RNA polymerase requried in nucleus for RNA synthesis in enkary...

    Text Solution

    |

  8. Gene and cistron words are sometimes used synonymously because:

    Text Solution

    |

  9. HIV has a protein coat and a genetic material which is:

    Text Solution

    |

  10. Largest bacterial plasmid has kilobases:

    Text Solution

    |

  11. Cauliflower mosaic virus has :

    Text Solution

    |

  12. DNA polymerase that helps in DNA replication is of :

    Text Solution

    |

  13. In recent years , DNA sequence (nucleotide sequence ) of mt-DNA and Y ...

    Text Solution

    |

  14. Genetic Map is one that :

    Text Solution

    |

  15. The linkage map of X- chromosomes of fruitfly has 66 units with yellow...

    Text Solution

    |

  16. In lac operon the genes a , y and z code respectively for

    Text Solution

    |

  17. Down's syndrome is caused by an extra copy of chromosome number 21. w...

    Text Solution

    |

  18. During translation initiation in prokaryotes a GTP molecule is neede...

    Text Solution

    |

  19. The place where RNA - polymerase attaches with the DNA is called :

    Text Solution

    |

  20. The total number of nitrogenous bases in human genome is estimated to ...

    Text Solution

    |