Home
Class 12
BIOLOGY
A bacterium with completely radioactive ...

A bacterium with completely radioactive DNA was allowed to replicate in a non- radioactive medium for two generation what `%` of the bacteria should contain radioactive DNA:-

A

1

B

0.5

C

0.25

D

`12.5`%

Text Solution

Verified by Experts

The correct Answer is:
B
`**" "`Escherichia coli with completely radioactive DNA was allowed to replicate in non-radioactive medium for two generations (40 minutes). Recentage of bacteria with radioactive DNA is 50%.
`**" "`DNA extracted from the culture after another generation [that is after 40 minutes, II generation] was composed of equal amounts of this hybrid DNA and of 'light' DNA.
Promotional Banner

Topper's Solved these Questions

  • MOLECULAR BASIS OF INHERITANCE

    A2Z|Exercise Section A: Topicwise Questions (topic 4: Transcription (transcription Unit And The Gene, Types Of Rn|31 Videos

  • MOLECULAR BASIS OF INHERITANCE

    A2Z|Exercise Section A: Topicwise Questions (topic 5: Genetic Code) Mutations And Genetic Code, Trna-the Adapter|35 Videos

  • MOLECULAR BASIS OF INHERITANCE

    A2Z|Exercise Section A: Topicwise Questions (topic 2: The Search For Genetic Material) The Genetic Material Is Dn|16 Videos

  • MOCK TEST 3

    A2Z|Exercise EXERCISE|90 Videos

  • ORGANISMS AND POPULATIONS

    A2Z|Exercise Section D: Chapter-end Test|50 Videos

Similar Questions

Explore conceptually related problems

A bacterium with completely radioactive DNA was allowed to reclicate in a non- radioactive medium for two generation what % of the bacteria should contain radioactive DNA:-

Escherichia coli with completely radioactive DNA was allowed to replicate in nonradioactive medium for two generations. Percentage of bacteria with radioactive DNA is :

A completely radio active DNA was allowed to replicate in non radio medium for two generations. Percentage of radioactive DNA is after process :-

E.coli with dsDNA labeled with radioactive thymidine, allowed to replicates in a simple nutrient medium for two - generation. What will be the percentage of bacteria containing only non-radioactive DNA ?

E. coil with completely N^(15) DNA was allowed to replicate in N^(14) medium for two generations. Percentage of bacteria with heavy DNA will be

If a completely radioactive double - stranded DNA molecule undergoes two rounds of replication in a non - radioactive medium, what will be the radioactive status of the four resulting molecules ?

A completely radioactive double standed DNA molecule undergoes two round of raplication in a non radioactive medium. What will be the radioactive status of the foour daughter molecues :-

A DNA molecule in which both strands have radioactive thymidine is allowed to duplicate in an environment containing non- radioactive thymidine. What will be the exact number of DNA molecules that contains the radio active thymidine after 3 duplications -

A2Z-MOLECULAR BASIS OF INHERITANCE-Section A: Topicwise Questions (topic 3:replication) The Experimental Proof, The Machinery And The E
  1. The enzyme required to catalyze the polymerizations of deoxynucleotide...

    Text Solution

    |

  2. Okazaki segments are formed during or DNA multiplication is called

    Text Solution

    |

  3. Match the column I and II, and choose the correct combination from the...

    Text Solution

    |

  4. DNA replication is :

    Text Solution

    |

  5. Hargovind Khorana is known for

    Text Solution

    |

  6. During replication of DNA, Okazaki fragments are formed in the directi...

    Text Solution

    |

  7. Recongnise the figure and find out the correct matching.

    Text Solution

    |

  8. DNA replication is semiconservative as

    Text Solution

    |

  9. During replication of DNA

    Text Solution

    |

  10. Process used by Meselson and Stahl for studying semiconservative repli...

    Text Solution

    |

  11. Experimental material in the study of DNA replication has been

    Text Solution

    |

  12. DNA duplication or multiplication in known as

    Text Solution

    |

  13. Mode of DNA replication in E. coli is :-

    Text Solution

    |

  14. In bacterial DNA replication synthesis starting from the site of origi...

    Text Solution

    |

  15. The following figure shows

    Text Solution

    |

  16. It ha s not escaped our notice t hat the specific pairing we have post...

    Text Solution

    |

  17. Isotopes used in proving semi-conservation replication of DNA were

    Text Solution

    |

  18. Taylor demonstrated chromosome replication to be semiconservation in

    Text Solution

    |

  19. DNA synthesis can be specifically measured by estimating the incorpora...

    Text Solution

    |

  20. A bacterium with completely radioactive DNA was allowed to replicate i...

    Text Solution

    |