Home
Class 12
BIOLOGY
During reproduction, the chromosome numb...

During reproduction, the chromosome number `(2n)` reduces of half `(n)` in the gametes and again the original number (2n) is restored in the offspring. What are the processes through which these events take place?

Promotional Banner

Topper's Solved these Questions

  • P.S.E.B SAMPLE PAPER-2021(SOLVED)

    JMD PUBLICATION|Exercise EXERCISE|30 Videos

  • Principle of Inheritance & Variations

    JMD PUBLICATION|Exercise EXERCISE|25 Videos

Similar Questions

Explore conceptually related problems

Fill in the blanks 2n chromosome number of butterfly is _______.

Calculate the oxidation number of nitrogen (N) in N2H4

Calculate the oxidation number of nitrogen (N) in N2O5

If chromosome number in a stock is 2n=48 and scion-microscope mother cell has 2n=24, then the root cell and microspore will have:

Which of the following are expression with numbers only? 9-2n

The number of chromsomes in meiocyte (2N) of apple is

What is the maximum number of electrons in a subshell that can have the quantum numbers n = 3 and l = 2 ?

Out of (2n+1) tickets consecutively numbered, three are drawn at random. Find the chance that the numbers on them are in AP.

Find the number of n digit numbers, which contain the digits 2 and 7, but not the digits 0, 1, 8, 9.

JMD PUBLICATION-PRACTICE SAMPLE PAPER (SOLVED)-EXERCISE
  1. True or False India is a secondary center of domestication of Potato...

    Text Solution

    |

  2. Can an unfertilised apomictic embryo sac give rise to a deploid embry...

    Text Solution

    |

  3. During reproduction, the chromosome number (2n) reduces of half (n) in...

    Text Solution

    |

  4. Reproductive health refers only to healthy reproductive functions. Com...

    Text Solution

    |

  5. Comment on the RCH programme of the government to improve the reproduc...

    Text Solution

    |

  6. Enlist the steps of controlled cross pollination. Would emasculation b...

    Text Solution

    |

  7. What is the function of histones in DNA packing?

    Text Solution

    |

  8. Distinguish between heterochromatin and euchromatin. which of the two ...

    Text Solution

    |

  9. " Prevention is better than Cure" Comment.

    Text Solution

    |

  10. How do mycorrhizal fungi help the plants harbouring them?

    Text Solution

    |

  11. Restriction enzymes should not have more than one site of action in th...

    Text Solution

    |

  12. with respect to understanding disease discuss the importance of transg...

    Text Solution

    |

  13. define commensalism and give an example.

    Text Solution

    |

  14. Define Parasitism and give one example.

    Text Solution

    |

  15. What cout have triggered mass extinctions of species in the past

    Text Solution

    |

  16. Two heterozygous parents are crossed. If two loci are linked what woul...

    Text Solution

    |

  17. ExplainHershey and Chase experiment to prove that DNA is the hereditar...

    Text Solution

    |

  18. In which way has the study of biology helped us to control infectious ...

    Text Solution

    |

  19. In which food would you find lactic acid bacteria? Mention some of the...

    Text Solution

    |

  20. Describe briefly "Origin of replication".

    Text Solution

    |