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 "

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Biology - 12th Class Biology Chapter 22 Short Questions Preparation

Question # 1

Differentiate between genotype and phenotype.

  • Ans 1: Genotype: Genotype is the genetic complement i.e the genes is an individual for a particular trait e.g"Rr" &"Rr" are alleles for red color."rr" are alleles for white colour.
  • Ans 2: Phenotype:"Phenotype" is the from of appearance of a trait in an organism".e.g Red and white flower colours are example of phenotype.
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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

Differentiate between genotype and phenotype.

  • Ans 1: Genotype: Genotype is the genetic complement i.e the genes is an individual for a particular trait e.g"Rr" &"Rr" are alleles for red color."rr" are alleles for white colour.
  • Ans 2: Phenotype:"Phenotype" is the from of appearance of a trait in an organism".e.g Red and white flower colours are example of phenotype.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 2

Question # 1

State Law of independent assortment.

  • Ans 1: When two contrasting pairs of traits are followed in the same cross,their alleles are assorted independently into gametes.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 3

Question # 1

How does ABO incompatibility protect the developing baby against Rh-

  • Ans 1: Incompatiability
    Rh sensitization of Rh mother can be easily avoided If mother is given an injection of Rh antiserum during early pregnancy and immediately after birth.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 4

Question # 1

Define co-dominance.

  • Ans 1: Different alleles of a gene that are both expressed in a heterozygous condition are called co-dominance e.g MN blood group system.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 5

Question # 1

What is beanbag genetics? Explain.

  • Ans 1: Beanbag genetics means that alleles are like a bean bag.The entire bean bag full of beans is the gene of the population.In the bean bag approach we can imagine the entire gene pool comprising all the alleles for all different traits at once,or we can just focus on some subset,such as all the alleles for a single trait
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12th Class Biology Chapter 22 Short Questions Preparation - Set 6

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

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