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Do now! Can you read through the investigation sheet you stick in last lesson? In what ways are we different from each other (“variations”)? In what ways are we different from each other (“variations”)? In your groups can you roughly list as many differences as you can? In what ways are we different from each other (“variations”)? Can you now divide these differences between those that are inherited and those which are environmental and those which might be both. Examples inherited environment both Earlobe shape scars Intelligence Eye colour language Body mass Nose shape height Investigating variation Investigating variation Investigation to be finished for homework. Due Wednesday 14th October Continuous variation Continuous variation • Either many genes are involved in that characteristic • Or the genes are operating with environmental effects too 6 5.5 5 4.5 4 3.5 3 2.5 2 1.5 5 5.5 6 6.5 7 7.5 8 8.5 9 Continuous variation • Either many genes are involved in that characteristic • Or the genes are operating with environmental effects too • Body mass • Milk yield • Hand size Discontinuous variation Discontinuous variation • A single gene gives the characteristic • The gene operates with no environmental effects Discontinuous variation • A single gene gives the characteristic • The gene operates with no environmental effects Tongue rolling Blood group Eye colour Sex