12th Class Fsc Biology Online Preparation for chapter 22 (Variation and Genetics)

Online Short Questions For Chapter 8 "12th Class Biology Chapter 22 Short Questions Preparation "

Try The Short Questions For 12th Class Biology Chapter 22 Short Questions Preparation

  • Total Questions10

  • Available Sets6

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Biology - 12th Class Biology Chapter 22 Short Questions Preparation

Question # 1

What is haemophillia?Give its type.

  • Ans 1: Haemophilia is rare x-linked recessive trait.Haemophilic's blood does not clot properly after an injury,because it has either a reduction or malfunction or complete absence of blood clotting factor.
    It types are Haemophilia A,haemophilia B and haemophila C.
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Prepare Complete Set Wise Questions For Chapter 8 "12th Class Biology Chapter 22 Short Questions Preparation "

12th Class Biology Chapter 22 Short Questions Preparation - Set 1

Question # 1

What is haemophillia?Give its type.

  • Ans 1: Haemophilia is rare x-linked recessive trait.Haemophilic's blood does not clot properly after an injury,because it has either a reduction or malfunction or complete absence of blood clotting factor.
    It types are Haemophilia A,haemophilia B and haemophila C.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 2

Question # 1

What is Pleiotropy? Give one example.

  • Ans 1: When a single gene affects two or more traits the phenomenon is called pleiotropy. E.g, genes that effect growth rate in human also influence both weight and height.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 3

Question # 1

Define polygenic Inheritance.Give example.

  • Ans 1: Polygenic inheritance is that which is controlled by more than two pairs of gene are called polyegneic traits.For example wheat grain color,human eye and skin color.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 4

Question # 1

What is test cross?Who devised it?

  • Ans 1: Mendel devised test cross.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 5

Question # 1

What is Pleiotropy? Give one example.

  • Ans 1: When a single gene affects two or more traits the phenomenon is called pleiotropy. E.g, genes that effect growth rate in human also influence both weight and height.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 6

Question # 1

Explain testicular feminization syndrome.

  • Ans 1: Testicular feminization syndrome is a rare X linked recessive trait.Although the persons affected by this trait have a set of XY chromosome.Yet tfm gene on their X chromosome develops them physically into females.They have breast,female genitalia a blind vagina but no uterus,degenerated testis are also present in abdomen.Such individuals are happily married as female but are sterile.it is an androgen insensitivity syndrome.Male sex hormone testoterone has no effect on them.
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22th Chapter

12th Class Biology Chapter 22 Short Questions

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