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

How sex is determined in plants?

  • Ans 1: Plants show a variety of sexual situations.Some species like Ginkgo are dio-ecious having plants of separate sexes.Male plants produce flower with only stamens and female plants produce flower with only carpels.Some dioecious plants have a difference of sex chromosome between the sexes.These have an X-Y system.These plants typically exhibit an X-choromosome autosome balance system for sex determination.
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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

How sex is determined in plants?

  • Ans 1: Plants show a variety of sexual situations.Some species like Ginkgo are dio-ecious having plants of separate sexes.Male plants produce flower with only stamens and female plants produce flower with only carpels.Some dioecious plants have a difference of sex chromosome between the sexes.These have an X-Y system.These plants typically exhibit an X-choromosome autosome balance system for sex determination.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 2

Question # 1

Differentiate between population & gene pool.

  • Ans 1: Population: Any group of interbreeding organisms of the same species that exist together in both time and space is called a population.e.g 100 diploid plants of pea in a field is an example of population.
  • Ans 2: Gene pool: All the genes or alleles found in a breeding population at a given time are collectively called the gene pool.e.g pea plants has white colors.There will be 100 genes(or 200 alleles) for flower color in gene pool.
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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

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 5

Question # 1

Give significance of test cross.

  • Ans 1: Mendel devised a cross called test cross,which is used to test the genotype of an individual showing a dominant phenotype.This cross finds out the homozygous or heterozygous nature of the genotype.
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12th Class Biology Chapter 22 Short Questions Preparation - Set 6

Question # 1

Differentiate between dominant and recessive traits.

  • Ans 1: Dominant trait: They trait which is controlled by dominant gene or allele us called dominant trait.
  • Ans 2: Recessive trait: The trait which is controlled by recessive gene or allele is called recessive trait.
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22th Chapter

12th Class Biology Chapter 22 Short Questions

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