1) Identical twins ... a) have different DNA b) are naturally occurring clones c) have the same DNA d) do not have the 'X' Factor 2) Which part of the cell is tranplanted into an egg cell to create a cloned embryo? a) Cell membrane b) Mitochondria c) Nucleus d) Cytoplasm 3) What is the main disadvantage with using cloning techniques to mass produce plants? a) Plants are all genetically identical so could be susceptible to the same diseases. b) Plants are not very easy to clone. c) Cloned plants are harder to grow than normal plants. d) Cloned plants are sterile and cannot produce offspring. 4) It is easier to clone animals than it is to clone plants. a) True b) False 5) Animals can be cloned by... a) Taking a cutting. b) Taking the nucleus from one of their cells and transplanting it into an egg cell.

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