Zoology - Principles of Inheritance and Variation Book Back Questions

12th Standard EM

    Reg.No. :
  •  
  •  
  •  
  •  
  •  
  •  

Biology

Time : 00:45:00 Hrs
Total Marks : 30
    5 x 1 = 5
  1. Haemophilia is more common in males because it is a

    (a)

    Recessive character carried by Y-chromosome

    (b)

    Dominant character carried by Y-chromosome

    (c)

    Dominant trait carried by X-chromosome

    (d)

    Recessive trait carried by X-chromosome

  2. Which of the following phenotypes is not possible in the progeny of the parental genotypic combination IAIO X IAIB?

    (a)

    AB

    (b)

    O

    (c)

    A

    (d)

    B

  3. What can be the blood group of offspring when both parents have AB blood group?

    (a)

    AB only

    (b)

    A, B and AB

    (c)

    A, B, AB and O

    (d)

    A and B only

  4. If the childs blood group is ‘O’ and fathers blood group is ‘A’ and mother’s blood group is ‘B’ the genotype of the parents will be

    (a)

    IA IA and IB Io

    (b)

    IA Io and IB Io

    (c)

    IA Io and IoIo

    (d)

    IoIo and IB IB

  5. XO type of sex determination and XY type of sex determination are examples of

    (a)

    Male heterogamety

    (b)

    Female heterogamety

    (c)

    Male homogamety

    (d)

    Both (b) and (c)

  6. 3 x 2 = 6
  7. What is Lyonisation?

  8. What are holandric genes?

  9. Mention the symptoms of Phenylketonuria

  10. 3 x 3 = 9
  11. Explain male heterogamety

  12. Brief about female heterogamety

  13. Give an account of genetic control of Rh factor.

  14. 2 x 5 = 10
  15. Explain the inheritance of sex linked characters in human being.

  16. Comment on the methods of Eugenics.

*****************************************

TN 12th Standard EM Biology free Online practice tests

Reviews & Comments about 12th Standard Zoology - Principles of Inheritance and Variation Book Back Questions

Write your Comment