Chapter 3 Genetics

Scope of syllabus: Monohybrid cross, dihybrid cross. Terms to be covered-gene, allele, heterozygous, homozygous, dominant, recessive, mutation, variation, phenotype, genotype). Sex-linked inheritance to include haemophilia and color blindness.

1) Introduction-Genetics: Heredity, Variations, Terminology used in heredity.

2) Physical Carriers of Heredity: Mendelism

3) Observations and Laws Postulates By Mendel:

  • 1) Law of unit character
  • 2) Law of Dominance
  • 3) Law of segregation (first law of inheritance)
  • 4) Law of independent assortment (second law of inheritance)

4) Chromosomal theory of Inheritance:

  • 1) Inheritance of sex (diag)

5) Linkage:

  • 1) Sex-linked inheritance

6) Experiments

7) Key Points to remember: (Summary)

8) Key terms

9) BTT(Beyond the text): Extra Info.

10) Assignments:

  • 1) Objective type(1 mark each)
  • 2) Answer in one or two sentences (1 mark each)
  • 3) Give reasons (2 marks each)
  • 4) Short notes (2/3 marks each)
  • 5) Answer in detail (4/5 marks each)
  • 6) Board questions
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