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All About Inheritance And Selection

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To know that offspring of plants and animals are similar, but not identical, to their parents because some traits are inherited. …

To know that offspring of plants and animals are similar, but not identical, to their parents because some traits are inherited.

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  • 1. INHERITANCE AND SELECTION BIOLOGY AT A GLANCE
  • 2. INHERITANCE AND SELECTION Copy Aim of Lesson To know that offspring of plants and animals are similar, but not identical, to their parents because some traits are inherited.
    • YOUR TASK
    • Copy and Answer Task
    • Make a list of those traits which are inherited and those which are not in a table and justify your decision.
  • 3. Learning Outcomes
    • L Describe similarities and differences between parents and offspring.
    • I Identify those traits which are inherited and those which are not and justify your decision.
    • H Suggest a way to test whether or not a trait is inherited.
  • 4. Make a list of those traits which are inherited and those which are not in a table and justify your decision Traits Inherited Traits Not Inherited
  • 5. Make a list of those traits which are inherited and those which are not in a table and justify your decision Traits Inherited Traits Not Inherited
  • 6. ACQUIRED CHARACTERISTICS
    • These are characteristics you pick up (acquire) as you go through life. Remember you are not born with them and you cannot pass them on to your children
    Make a list of characteristics or traits that David Beckham could l pass to his Children. Explain why?
  • 7. DESIGNER BABIES
    • Jessica’s Dream baby
    • Blonde Hair
    • Blue eyes
    • Small nose
    • Tall and skinny
    • Average feet
    • Sex: Female
    • Detached ears
    • Finger length: Long
    Explain how this can a achieved. Remember the development of these characteristics is controlled by chromosomes.
  • 8. YOUR GENES
    • Aim of Lesson
    • To know that cells have genetic material in the nucleus
    TASK Draw a cell on the board and students label it. Students decide whether it is an animal cell or plant cell and how they know.
  • 9. SPECIALISED CELLS
    • What are specialised cells?
    • Make a list of specialised in plants and animals.
    • What are sex cells?
    • Why are sex cells called specialised cells?
  • 10. SPERM CELL Draw & label the diagram below and state the functions or adaptations of the parts shown The main function of the sperm cell is to transport male genes to the female’s egg.
  • 11. ADAPTATIONS OF SPERM CELLS Parts of Sperm cell Adaptations Tail It is the whip-like structure of the sperm tail that propels it to swim to the egg in a snake like motion. Capsule shaped head Has a unique surface feature which allows it to burrow through the shell of the egg cells
  • 12. EGG CELL Draw & label the diagram below and state the functions or adaptations of the parts shown
  • 13. ADAPTATIONS OF EGG CELLS Parts of Sperm cell Adaptations Cytoplasm The egg has a lot of cytoplasm to support the multiple divisions it undergoes.