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

Define SRY gene.

  • Ans 1: SRY stands for sexual determining region of y.It is the part of Y-chromosomes in human males which is responsible for male characters of maleness.
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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

Define SRY gene.

  • Ans 1: SRY stands for sexual determining region of y.It is the part of Y-chromosomes in human males which is responsible for male characters of maleness.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 2

Question # 1

What is test cross? Give its significance?

  • Ans 1: Test cross is a cross used to test the genotype of an organism showing dominant phenotype.
    Significance of test cross is that we can know the genotype of an organism
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12th Class Biology Chapter 22 Short Questions Preparation - Set 3

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 4

Question # 1

Differentiate between linkage and linkage group.

  • Ans 1: Linkage: linkage is a phenomenon in which all the genes on a chromosomes stay together is called linkage.
  • Ans 2: Linkage group: The genes which are present on a chromosome from a block and these genes atay together is called linkage group.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 5

Question # 1

What is type II diabetes or NIDDM?

  • Ans 1: Type II diabetes or NIDDM.It account for 90% of all diabetic patients.These person produce some endogenous insulin themselves,but their body cells fail to respond to insulin and cannot take up glucose from body.They develop some sort of insulin resistance.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 6

Question # 1

What is epistasis?Ho it differs from dominance?

  • Ans 1: Epistasis: An effect caused by a gene or gene pair at one locus interferes with or hides the effect caused by another gene or gene pair at another locus,such a phenomenon of gene interaction is called epistasis.
    Epistasis must not be confused with dominance.
  • Ans 2: Dominance: Dominance is the relationship between alleles of the same gene occupying the same locus,but epistasis is the interaction between different genes occupying different loci.
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22th Chapter

12th Class Biology Chapter 22 Short Questions

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