Edexcel IGCSE Biology · Spec 5.17B-5.20B
Cloning
How plants and animals are cloned, including tissue culture and the cloning of Dolly the sheep.
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Cloning
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Spec 5.17B-5.20B
What you need to know
- Describe micropropagation in plants
- Describe how mammals are cloned
- Explain the uses of cloned transgenic animals
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Answer each question before opening the answer.
What is micropropagation (tissue culture)?
Growing many genetically identical plants from small samples of tissue in sterile, nutrient-rich conditions.
Outline how a mammal can be cloned.
The nucleus from a body cell is placed into an egg cell whose nucleus has been removed; it is stimulated to divide and the embryo is implanted into a surrogate mother.
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