Home
Class 12
BIOLOGY
Study the following statements regarding...

Study the following statements regarding inbreeding and select the incorrect ones.
(i) The inbreeding strategies allow the desirable qualities of two different breeds to be combined.
(ii) It increases homozygosity.
(iii) It also helps in elimination of less desirable genes.
(iv) Continued inbreeding increases fertility and productivity.

A

(i) and (ii)

B

(ii) and (iii)

C

(iii) and (iv)

D

(i) and (iv)

Text Solution

AI Generated Solution

The correct Answer is:
To determine the incorrect statements regarding inbreeding, let's analyze each statement step by step. ### Step-by-Step Solution: 1. **Statement (i):** "The inbreeding strategies allow the desirable qualities of two different breeds to be combined." - **Analysis:** This statement is incorrect. Inbreeding refers to the breeding of genetically similar or identical individuals within the same breed, not between different breeds. Therefore, it does not allow for the combination of desirable qualities from two different breeds. 2. **Statement (ii):** "It increases homozygosity." - **Analysis:** This statement is correct. Inbreeding increases homozygosity, which means that there is a higher likelihood of having two identical alleles for a particular gene due to the mating of genetically similar individuals. 3. **Statement (iii):** "It also helps in elimination of less desirable genes." - **Analysis:** This statement is also correct. Inbreeding can expose harmful or less desirable genes, leading to their elimination over generations as they may reduce the fitness of the organism. 4. **Statement (iv):** "Continued inbreeding increases fertility and productivity." - **Analysis:** This statement is incorrect. Continued inbreeding often leads to inbreeding depression, which can decrease fertility and productivity due to the accumulation of harmful recessive traits. ### Conclusion: The incorrect statements regarding inbreeding are: - Statement (i) - Statement (iv) ### Final Answer: The incorrect statements are (i) and (iv). ---

To determine the incorrect statements regarding inbreeding, let's analyze each statement step by step. ### Step-by-Step Solution: 1. **Statement (i):** "The inbreeding strategies allow the desirable qualities of two different breeds to be combined." - **Analysis:** This statement is incorrect. Inbreeding refers to the breeding of genetically similar or identical individuals within the same breed, not between different breeds. Therefore, it does not allow for the combination of desirable qualities from two different breeds. 2. **Statement (ii):** "It increases homozygosity." ...
Promotional Banner

Topper's Solved these Questions

  • STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

    NCERT FINGERTIPS ENGLISH|Exercise HIGHER ORDER THINKING SKILLS|6 Videos
  • STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

    NCERT FINGERTIPS ENGLISH|Exercise NCERT (EXEMPLAR PROBLEMS)|25 Videos
  • SEXUAL REPRODUCTION IN FLOWERING PLANTS

    NCERT FINGERTIPS ENGLISH|Exercise Sexual Reproduction In Flowering Plants|145 Videos

Similar Questions

Explore conceptually related problems

Assertion : In breeding increases homozygosity exposing harmful recessive genes, some of which are eliminated by selection. Reason : Continued inbreeding reduces fertility and productivity.

Study the following statements regarding recombinant DNA technology and select the incorrect ones. (i) Taq polymerase extends the primers using the nucleotides provided in the reaction. (ii) Antibiotic resistance genes are considered as desirable genes in recombinant DNA technology. (iii) DNA fragments are separated according to their charge only, in agarose gel electrophoresis. (iv) Transformation is a procedure through which a piece of DNA is integrated in to the genome of a host bacterium. (v) To produce higher yields of a desired protein, host cells can be multiplied in a continuous culture. (vi) Downstream processing is one of the steps of polymerase chain reaction.

Study the following statements regarding acid rain and select the incorrect ones. (i) Acid rain refers to the rainfall and other forms of precipitation with a pH of less than 5. (ii) Oxides of sulphur and nitrogen are released from automobile exhausts, industries , power plants, etc. (iii) These oxides of sulphur and nitrogen, may react with water in the air and form sulphuric acid (H_(2)SO_(4)) and nitric acid (HNO_(3)) . (iv) Acid rain has harmful effects on animals and human beings but no characteristic impact on plants.

Study the following statements regarding food chains and select the correct ones. (i) Removal of 80% tigers from an area resulted in greatly increased growth of vegetation. (ii) Removal of most of the carnivores resulted in an increased population of deers. (iii) The lenght of food chains is generally limited to 3-4 trophic levels due to energy loss. (iv) The lenght of food chains may vary from 2 to 8 trophic levels. A) i and ii B) ii and iii C) i and iii D) iii and iv

Read the following statements and select the correct ones. (i) Same kind of sticky ends are produced when a DNA has been cut by different restriction enzymes. (ii) Exonucleases make cuts at specific positions within the DNA. (iii) Hind ll was the first restriction endonuclease to be isolated. (iv) A bacteriophage has the ability to replicate within bacterial cells by integrating its DNA with bacterial DNA. (v) Presence of more than one recognition sites for a enzyme within the vector facilitates the gene cloning.

Read the following statements regarding euglenoids and select the incorrect ones. (i) These are mostly freshwater organisms found in stagnant water. (ii) Their body is covered by a protein rich layer called pellicle which makes their body flexible. (iii) They are photosynthetic in the presence of sunlight but become heterotrophs in the absence of sunlight. (iv) They usually prosses tow flagella, one long and one short. (v) Euglenoids are multicellular ciliate protists

Study the four statements given below and answer the question which follow them. I) Inbreeding is necessary if we want to develop a pureline in animals II) inbreeding exposes harmful recessive genes that are eliminated by selection III) continuous inbreeding usually reduces fertility and productivity IV) inbreeding depression can be overcome by outcrossing How many of the above statements are correct?

Read the following statements and select the incorrect ones. (i) Circulatory system in arthorpods is of closed type. (ii) Parapodia in annelids help in swimming. (iii) Phylum Mollusca is the second largest animal phylum. (iv) Aschelminthes are dioecious.

Study the following statements concerning food chains and select the correct ones. (i) Removal of 80% of tigers from an area resulted in greatly increased growth of vegetation. (ii) Removal of most of the carnivores resulted in an increased population of deer. (iii)The length of food chains is generally limited to 3-4 trophic levels due to energy loss. (iv) The length of food chains may vary from 2 to 8 trophic levels.

Study the following statements and select the incorrect ones. (i) Physical removal of large and small particles through filtration and sedimentation is called primary sewage treatment. (ii) Secondary sewage treatment is mainly a mechanical process. (iii) Activated sludge sediment in a sewage treatment plant is a rich source of aeroic bacteria. (iv) Biogas, commonly called as gobar gas, is pure methane.

NCERT FINGERTIPS ENGLISH-STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION-Strategies For Enhancement In Food Production
  1. The term ''inbreeding depression'' is related to

    Text Solution

    |

  2. Continued inbreeding, especially close inbreeding generally results in

    Text Solution

    |

  3. Study the following statements regarding inbreeding and select the inc...

    Text Solution

    |

  4. Given below are four statements (i)-(iv). Which two of the following s...

    Text Solution

    |

  5. A breed of cow is mated with closely related breed for five generation...

    Text Solution

    |

  6. The breeding carried out between animals of different breeds is called

    Text Solution

    |

  7. Fill up the blanks by selecting the correct option. In cross-breedin...

    Text Solution

    |

  8. Which of the following is example of cross-breed ?

    Text Solution

    |

  9. Hisardale is a new breed of sheep developed in Punjab by crossing

    Text Solution

    |

  10. Crossing of individual of two different species to produce a hybrid is...

    Text Solution

    |

  11. A mule is produced by the interspecific hybridisation between

    Text Solution

    |

  12. Fill in the blanks in the following statements by selecting the correc...

    Text Solution

    |

  13. Match the terms given in column I with their descriptions given in col...

    Text Solution

    |

  14. Artificial insemination involves

    Text Solution

    |

  15. Read the following statements and select the incorrect one.

    Text Solution

    |

  16. Artificial breeding of cattle is brought about by

    Text Solution

    |

  17. MOET stands for

    Text Solution

    |

  18. Given below are the three statements each with one or two blanks. Sele...

    Text Solution

    |

  19. Given below are four statements (A-D) each with one or two blanks. Sel...

    Text Solution

    |

  20. Multiple ovulation embryo tranfer technology is related to

    Text Solution

    |