Home
Class 12
BIOLOGY
A DNA molecule in E. coli is heavy and l...

A DNA molecule in E. coli is heavy and labelled with `N^(15)`. Iit is allowed to replicate in a medium containing `N^(14)`. After one generation of replication, the two daughter molecules will

A

same density , but do not resemble their parent DNA

B

different densities, but resemble their parent DNA

C

different densities and also do not resemble the parent DNA

D

both the strands same in density, but do not resemble to their parent DNA

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • GENE, ITS EXPRESSION AND REGULATION

    ARIHANT NEET|Exercise Chapter Exercise (B) Medical entrance s special format questions (Statement based Questions )|13 Videos

  • GENE, ITS EXPRESSION AND REGULATION

    ARIHANT NEET|Exercise Chapter Exercise (B) Medical entrance s special format questions (Assertion reason)|8 Videos

  • GENE, ITS EXPRESSION AND REGULATION

    ARIHANT NEET|Exercise Check point 8.4|20 Videos

  • FUNGI

    ARIHANT NEET|Exercise Chapter exercise C ( Medical entrances gallery (Collection of question asked in NEET & various Medical Entrance Exams )|29 Videos

  • GROWTH, REGENERATION AND AGEING

    ARIHANT NEET|Exercise Chapter exercises (Medical entrances gallery)|11 Videos

Similar Questions

Explore conceptually related problems

A bacteria containing 100% N^(15) nitrogen bases is allowed to replicate in medium containing N^(14) bases. After one round of duplication , the result would be

One E . Coli bacterium contains a hybrid DNA with one heavy N^(15) Strand and one light N^(14) Strand. It was allowed ti replicate for 3 hours in a medium containing N^(14) What proportion of E. coli which will neither float nor sink in the test tube on ultra - centrifugation with CsCl ?

Assuming that 50 heavy (i.e., containing N^(15) ) DNA molecules replicated twice in a medium containing N^(14) we expect

Escherichia coli fully labelled with .^(15)N is allowed to grow in .^(14)N medium. The two strands of DNA molecule of the first generation of bacteria have :

DNA having labelled thymidine is allowed to replicate in medium having nonradioactive thymidine. After three duplications, the DNA molecules having labelled thymidine shall be :

DNA having radiolabeled thymidine is allowed to replicate in medium having non-radioactive thymidine. After three generation radiolabeled thymidine shall be present in

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 -

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

ARIHANT NEET-GENE, ITS EXPRESSION AND REGULATION-Chapter Exercise (A) Taking it together (Assorted questions of the Chapter for Advanced Level Practice
  1. Practice using the dictionary of the genetic code determine the amino ...

    Text Solution

    |

  2. During protein synthesis , the correct amino acid is brought to the ri...

    Text Solution

    |

  3. Which among the following codon do not codes for valine (val)?

    Text Solution

    |

  4. The process of translation requires

    Text Solution

    |

  5. Which of the following is true about the terminator

    Text Solution

    |

  6. Which of the following is true about the promoter gene?

    Text Solution

    |

  7. In protein synthesis, a polypeptide of five amino acids is synthesized...

    Text Solution

    |

  8. In mRNA , AUG is the initiating codons and UAA, UAG and UGA are termin...

    Text Solution

    |

  9. In tryptophan synthesis pathway , tryptophan acts as a compressor . Wh...

    Text Solution

    |

  10. While analysing the DNA of an organism a total number of 5386 nucleoti...

    Text Solution

    |

  11. Which of the following is true for RNA processing?

    Text Solution

    |

  12. A DNA molecule in which both strands have radioactive thymidine is all...

    Text Solution

    |

  13. A bacteria containing 100% N^(15) nitrogen bases is allowed to replica...

    Text Solution

    |

  14. A DNA molecule in E. coli is heavy and labelled with N^(15). Iit is al...

    Text Solution

    |

  15. DNA is a polymer of nucleotides which are linked to each other by 3'-5...

    Text Solution

    |

  16. Which of the following pairs is correctly matched?

    Text Solution

    |

  17. Unlike the process of replication , which one set in the total DNA of ...

    Text Solution

    |

  18. Viruses grown in the presence of radioactive phosphorus contained radi...

    Text Solution

    |

  19. Select the correct statement about the structure gene in a transcripti...

    Text Solution

    |

  20. Which process occurs in the regulation of gene expression in prokaryot...

    Text Solution

    |