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SS3: BIOLOGY - 2ND TERM

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  1. Reproductive Behaviours | Week 1
    1 Topic
    |
    1 Quiz
  2. Life Cycles of Insects, Toads | Week 2
    6 Topics
    |
    1 Quiz
  3. Social Insects | Week 3
    2 Topics
    |
    1 Quiz
  4. Biology of Heredity (Genetics) I | Week 4
    4 Topics
  5. Biology of Heredity (Genetics) II | Week 5
    6 Topics
    |
    1 Quiz
  6. Biology of Heredity (Genetics) III | Week 6
    7 Topics
    |
    1 Quiz
  7. Variation | Week 7
    1 Topic
    |
    1 Quiz
  8. Evolution | Week 8
    3 Topics
    |
    1 Quiz



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Topic Content:

  • Sex Determination in Man
  • Probability of having a Boy or Girl

A person’s sex is an inherited characteristic. There are 23 pairs of chromosomes in each body cell. Of these, one pair is directly concerned with sex determination and are called sex chromosomes, the other 22 pairs are known as autosomes. Autosomes are numbered roughly in relation to their sizes.

 

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