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

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Biology - 12th Class Biology Chapter 22 Short Questions Preparation

Question # 1

What do you know about co-dominance?

  • Ans 1: Different alleles of a gene that are both expressed in a heterozygous condition is called co-dominance.
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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 do you know about co-dominance?

  • Ans 1: Different alleles of a gene that are both expressed in a heterozygous condition is called co-dominance.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 2

Question # 1

What is contribution of Carl Correns in genetics?

  • Ans 1: Carl Correns discovered the phenomenon of incomplete dominance.
    He crossed red flowered 4 O clock plant with while flowered 4 O clock plant.In f1pink flowers were produced instead of red color was dominant.He again crossed pink flowers from F1,in F2 red,pink white flowers obtained with ratio 1:2:1 respectively.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 3

Question # 1

Why is blood group AB called as universal recipient?

  • Ans 1: AB blood group is called recipient because they have both A and B antigens but no antibodies,so they can easily accept or receive any type of blood group i.e,A,B,AB or O
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12th Class Biology Chapter 22 Short Questions Preparation - Set 4

Question # 1

Define pleiotropy. Give two examples.

  • Ans 1: When a gene more than one trait it is called pleiotropy. For example gene for eye colour in Drosophila also controls shape of spermathecae.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 5

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 6

Question # 1

What are sex limited traits?Give an example.

  • Ans 1: Sex limited traits are present only in one sex due to anatomical differences.Such trait affects a structure or function of the body present in only males or only females.For example genes for milk yield in dairy cattle affect only cows.
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12th Class Biology Chapter 22 Short Questions

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