1) What is variation controlled by? a) Genes only b) Environment only c) Genes and environment 2) What are sperm and egg cells also known as? a) Gametes b) Diploid cells c) Fertiliser cells 3) What is fertilisation? a) When an egg and sperm fuse b) When an egg is released from the ovary c) When a new body cell is created 4) Which two are examples of genetic variation? a) Scars and gender b) Height and natural eye colour c) Natural eye colour and gender 5) What is a mutation? a) When there is no change in the DNA b) A change in a gene or chromosome c) A harmful change that causes the genome to stop working 6) What process drives evolution a) Natural selection b) Selective breeding c) Cloning 7) Why is selective breeding used with animals or plants? a) This is a natural process that happens without human intervention b) It allows organisms to be as genetically diverse as possible c) It means that desirable characteristics that will be of benefit will only be selected, e.g. good quality meat. 8) What is genetic engineering? a) All the genes are replaced in one organism with genes from another organism b) It is when an unknown gene is inserted into a random location in the genome c) The genome of one organism is altered, by adding a gene from another to create a desirable characteristic 9) Which of these is an example of environmental variation? a) Language and accent b) Weight c) Height 10) Which famous scientist first developed the theory of evolution? a) Lamarck b) Darwin c) Wallace

Variation Quiz

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