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The great competition of life

The great competition of life. Objectives: explain the process of natural selection distinguish between natural selection and selective breeding explain how variation between individuals may eventually lead to change in species interpret data on changes in species caused by natural selection.

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The great competition of life

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  1. The great competition of life Objectives: explain the process of natural selection distinguish between natural selection and selective breeding explain how variation between individuals may eventually lead to change in species interpret data on changes in species caused by natural selection

  2. Starter task... Variation and natural selection • Which of these features would make a lion more likely to survive to reproduce? A Faster runner than other lions B Good at working in a pack C Attractive to lions of the opposite sex D Well camouflaged E Quick reactions F Strong − able to bring prey down to the ground to kill it • For each one that you choose, explain why this feature would be an advantage.

  3. Selective breeding • What do you already know about selective breeding? • http://www.bbc.co.uk/learningzone/clips/selective-breeding/5520.html • What are the advantages and disadvantages of selective breeding?

  4. Natural selection • What can you remember from last lesson? • http://www.bbc.co.uk/learningzone/clips/natural-selection/5516.html • Draw a cartoon strip to describe the process of Natural Selection – use pages 89-90 to help you. • Examples – head lice, antibiotic resistant bacteria, peppered moths.

  5. Task... • Draw a cartoon strip to describe the process of Natural Selection – use pages 89-90 to help you. • You should have a minimum of 5 stages: • Variation • Selection pressures • Some survive, some die • Survivors reproduce and pass on genes • New variety with new genes

  6. 6 mark question... • Describethe similaritiesand differences between selectivebreeding and naturalselection. • Use pages 88 and 89 to help you. • Remember to include key words and write in full sentences.

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