Home
Class 12
BIOLOGY
A : en block inheritance of all genes lo...

A : en block inheritance of all genes located on the same chromosome may occur in some organisms.
R : Dihybrid test cross will have only two phenotypes.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)

B

If both Assertion & Reason are true and the reason is not the correct explanation of the assertion , then mark (2)

C

If Assertion is true statement but Reason is false, then mark (3)

D

If both Assertion and Reason are false statements, then mark (4)

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • PRINCIPLES OF INHERITANCE AND VARIATION

    AAKASH INSTITUTE|Exercise Assignment (SECTION-C) Previous Years Questions|175 Videos

  • PLANT KINGDOM

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION -D (Assertion - Reason Type Questions)|10 Videos

  • REPRODUCTION IN ORGANISMS

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION-D ASSERTION - REASON TYPE QUESTION IN THE FOLLOWING QUESTIONS, A STATEMENT OF ASSERTION (A) IS FOLLOWED A STATEMENT OF REASON (R ).|15 Videos

Similar Questions

Explore conceptually related problems

The frequency of crosoing -over occurring between two genes located on the same chromosome depends on:

Frequency of crossing over occurring between two gene located on the same chromosome depends up

A : Test cross is the tool for knowing linkage between genes. R : Monohybrid test cross gives two phenotypes and two genotypes.

If two genes in a dihybrid cross were located on the same chromosome, the proportion of parental gene combinations will be:

Assertion: When two genes in a dihybrid cross were situated on the same chromosome, the proportion of parental gene combinations were much higher than the non-parental type. Reason: This is due to the physical association or linkage of the two genes.

Assertion: When the two genes in a dihybrid cross are situated on the same chromosome, the proportion of parental gene combinations is much higher than nonparental type. Reason: Higher parental gene combinations can be attributed to crossing over betweentwo genes.

Consider the following statements regarding linkage. I. The linked genes ae located on the same chromosome. II. Crossing over between linked genes is rare III. Linked genes are always inherited together IV. Linked genes affects the percentage of homozygosity following hybridisation Choose the correct option.

AAKASH INSTITUTE-PRINCIPLES OF INHERITANCE AND VARIATION-Assignment (SECTION-D) Assertion-Reason Type Questions
  1. A : Turner's syndrome generally does not occur in males. R : Foetus ...

    Text Solution

    |

  2. A : Sickel cell anemia occurs due to the point mutation. R : mRNA pr...

    Text Solution

    |

  3. A : Holandric traits are passed from one generation to the next genera...

    Text Solution

    |

  4. Assertion: Dominance is not an autonomous feature of a gene or the pro...

    Text Solution

    |

  5. A : The possibility of a female becoming a haemophilic is extremely ra...

    Text Solution

    |

  6. A : Polyploids with odd number of chromosomes are prepagated vegetativ...

    Text Solution

    |

  7. A : The hetrozygotic female for haemophilia may transmit the disease t...

    Text Solution

    |

  8. A : Non-allosomic genic determination of sex is found in bacteria. R...

    Text Solution

    |

  9. A : Non-allosomic genic determination of sex is found in bacteria. R...

    Text Solution

    |

  10. A : Crossing over is exchange of genetic material between non-homologo...

    Text Solution

    |

  11. A : Mendel gave postulates like "principles of segregation and princip...

    Text Solution

    |

  12. A : Test cross is the tool for knowing linkage between genes. R : Mo...

    Text Solution

    |

  13. A : Myotonic dystrophy is is caused by recessive mutant pleiotropic ge...

    Text Solution

    |

  14. A : In snapdragon, F(1) plants do not have red or white flowers. R ...

    Text Solution

    |

  15. A : en block inheritance of all genes located on the same chromosome m...

    Text Solution

    |

  16. A : Morgan's cross III was eonducted in Drosophila to locate genes on ...

    Text Solution

    |

  17. A : Antlers in male deer are sex influenced traits. R : These are co...

    Text Solution

    |

  18. A : One drum stick nucleus is present in the neutrophil of normal fema...

    Text Solution

    |

  19. A : Blood group phenotype is controlled by presence or absence of anti...

    Text Solution

    |

  20. A : XO type sex determination is found in large number of insects. ...

    Text Solution

    |