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.

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All About Inheritance And Selection

  1. 1. INHERITANCE AND SELECTION BIOLOGY AT A GLANCE
  2. 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. <ul><li>YOUR TASK </li></ul><ul><li>Copy and Answer Task </li></ul><ul><li>Make a list of those traits which are inherited and those which are not in a table and justify your decision. </li></ul>
  3. 3. Learning Outcomes <ul><li>L Describe similarities and differences between parents and offspring. </li></ul><ul><li>I Identify those traits which are inherited and those which are not and justify your decision. </li></ul><ul><li>H Suggest a way to test whether or not a trait is inherited. </li></ul>
  4. 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. 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. 6. ACQUIRED CHARACTERISTICS <ul><li>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 </li></ul>Make a list of characteristics or traits that David Beckham could l pass to his Children. Explain why?
  7. 7. DESIGNER BABIES <ul><li>Jessica’s Dream baby </li></ul><ul><li>Blonde Hair </li></ul><ul><li>Blue eyes </li></ul><ul><li>Small nose </li></ul><ul><li>Tall and skinny </li></ul><ul><li>Average feet </li></ul><ul><li>Sex: Female </li></ul><ul><li>Detached ears </li></ul><ul><li>Finger length: Long </li></ul>Explain how this can a achieved. Remember the development of these characteristics is controlled by chromosomes.
  8. 8. YOUR GENES <ul><li>Aim of Lesson </li></ul><ul><li>To know that cells have genetic material in the nucleus </li></ul>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. 9. SPECIALISED CELLS <ul><li>What are specialised cells? </li></ul><ul><li>Make a list of specialised in plants and animals. </li></ul><ul><li>What are sex cells? </li></ul><ul><li>Why are sex cells called specialised cells? </li></ul>
  10. 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. 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. 12. EGG CELL Draw & label the diagram below and state the functions or adaptations of the parts shown
  13. 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.

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