Home
Class 12
BIOLOGY
Assertion: The linked genes tend to get ...

Assertion: The linked genes tend to get inherited together.
Reason: The band between them fails to break.

A

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

B

If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.

C

If Assertion is true but the Reason is false.

D

If both Assertion and Reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the assertion and reason about linked genes, we can follow these steps: ### Step 1: Understand the Assertion The assertion states that "the linked genes tend to get inherited together." - **Explanation**: Linked genes are genes that are located close to each other on the same chromosome. Because of their proximity, they are often inherited together during the process of meiosis. ### Step 2: Understand the Reason The reason provided is "the band between them fails to break." - **Explanation**: The "band" refers to the physical connection or linkage between the genes on the chromosome. During meiosis, if the genes are close enough, the chromosomal crossover (exchange of genetic material) is less likely to occur between them, which means they are inherited together. ### Step 3: Analyze the Relationship Between Assertion and Reason Now, we need to determine if the reason correctly explains the assertion. - **Analysis**: Since linked genes are inherited together due to their close proximity on the chromosome, and the reason explains that the linkage (or band) does not break, this means that the assertion is supported by the reason. ### Step 4: Conclusion Both the assertion and the reason are true, and the reason correctly explains the assertion. Therefore, the correct answer is: - **Option 1**: If both assertion and reason are true and reason is the correct explanation of the assertion.
Promotional Banner

Topper's Solved these Questions

  • PRINCIPLES OF INHERITANCE AND VARIATION

    ICSE|Exercise MULTIPLE CHOICE QUESTION|98 Videos
  • PRINCIPLES OF INHERITANCE AND VARIATION

    ICSE|Exercise COMPETITION CORNER (OBJECTIVE TYPE QUESTIONS (MULTIPLE CHOICE QUESTIONS)) |45 Videos
  • ORGANISMS AND POPULATIONS

    ICSE|Exercise COMPETITION CORNER (ASSERTION AND REASON TYPE QUESTIONS)|22 Videos
  • QUESTION PAPER 2022 TERM 1

    ICSE|Exercise MULTIPLE CHOICE QUESTIONS|45 Videos

Similar Questions

Explore conceptually related problems

Assertion: The chimpanzee is the closest relative of the present day humans Reason: The banding pattern in some autosomes of man and chimpanzee is remarkable similar.

The linked characters would always inherit together till they are

The phenomenon of closely placed genes being inherited together is

The linked character s would always inherit together till they are

Assertion :- Genes are the units of inheritance. Reason :- They contain the information that is required to express a particular trait in an organism.

When closely placed genes on the same chromosomes are inherited together the phenomenon is known as

Assertion :- The gene I codes for the repressor of the lac operon. Reason : The y-gene codes for permease, which increases permeability of the cell to beta -galactosidase.

Assertion : The maxiumum frequency of recombination, that can result from crossing over between linked genes is 50 percent Reason : Linked genes shown higher frequency of crossing over if distance between them is longer.

Assertion: Constitutive genes are also known as house keeping genes. Reason: Constitutive genes fail to express, as their products are not required for essential normal activities.

Assertion :- At the time of Mendel, the real basis of inheritance was observed. Reason : At the time of Mendel, the nature of those factors regulating the pattern of inheritance was not clear.

ICSE-PRINCIPLES OF INHERITANCE AND VARIATION-COMPETITION CORNER (OBJECTIVE TYPE QUESTIONS (ASSERTION AND REASON TYPE QUESTIONS))
  1. Assertion: The short-legged sheep is a pure breed. Reason: They a...

    Text Solution

    |

  2. Assertion: Human beings are not suitable for breeding experiments to i...

    Text Solution

    |

  3. Assertion: Overexposure to sun tans the skin in human beings. Rea...

    Text Solution

    |

  4. Assertion: Ratio of complementary genes is 9:7. Reason: Ratio of...

    Text Solution

    |

  5. Assertion: The Y-chromosome is called androsome. Reason: X and Y-c...

    Text Solution

    |

  6. Assertion: In eukaryotic chromosome, DNA is long, double-stranded and ...

    Text Solution

    |

  7. Assertion: For law of independent assortment, two pairs of contrasting...

    Text Solution

    |

  8. Assertion: Two chromatids remain held together at one point called cen...

    Text Solution

    |

  9. Assertion: Extranuclear chromosomes are present in mitochondria and pl...

    Text Solution

    |

  10. Assertion: Mendel successfully formulated the laws of heredity. R...

    Text Solution

    |

  11. Assertion: Progeny of pure line is heterozygous. Reason: Pure li...

    Text Solution

    |

  12. Assertion: In honeybee, female is diploid and male is haploid. Re...

    Text Solution

    |

  13. Assertion: The linked genes tend to get inherited together. Reaso...

    Text Solution

    |

  14. Assertion: Drosophila melanogaster is widely used in genetic research....

    Text Solution

    |

  15. Assertion: Haemophilia shows criss-cross inheritance. Reason: The...

    Text Solution

    |

  16. Assertion: Mutations are necessary for the survival of the species. ...

    Text Solution

    |

  17. Assertion: In four o'clock or snapdragon plant, a cross between a homo...

    Text Solution

    |

  18. Assertion: The person heterozygous for sickle-cell trait produces both...

    Text Solution

    |

  19. Assertion: Law of independent assortment holds good for the gene pairs...

    Text Solution

    |

  20. Assertion: In humans, the gamete contributed by male determines whethe...

    Text Solution

    |