| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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Tissue culture: using small groups of cells from part of a plant to grow
identical new plants. This is important for preserving rare plant species or commercially in nurseries. |
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How does the technique of tissue culturing enable cloning? Why is this important for plants? |
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Cuttings: an older, but simple, method used by gardeners to produce many identical new plants from a parent plant. |
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What way, other than tissue culture, can plants be cloned by gardeners? Discuss plant cloning techniques and why they are used.
Take cuttings of different plants.
Produce cauliflower clones – follow guidance from Science and Plants for Schools (SAPS). Observe growth in later lesson.
Evaluate the use of cuttings and tissue culture to clone plants.
http://www.saps.org.uk/secondary/teaching-resources/706-cauliflower-cloning-tissue-culture-and-micropropagation |
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Embryo transplants: splitting apart cells from a developing animal
embryo before they become specialised, then transplanting the identical embryos into host mothers.
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How is embryo transplant cloning carried out? Produce and evaluate a model to describe embryo transplants. |
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The process of adult cell cloning:
? The nucleus is removed from an unfertilised egg cell.
? The nucleus from an adult body cell, such as a skin cell, is inserted into the egg cell.
? An electric shock stimulates the egg cell to divide to form an embryo.
? These embryo cells contain the same genetic information as the adult
skin cell.
? When the embryo has developed into a ball of cells, it is inserted into
the womb of an adult female to continue its development. |
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What are the steps involved in adult cell cloning? Use a model to describe adult cell cloning. |
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Explain the potential benefits and risks of cloning in agriculture and in medicine and that some people have ethical objections.
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What are the potential benefits and risks involved in cloning and why do some people object? GF : Evaluate the effect that human cloning could have on the social, economic and cultural environment of the world if ti were to be legalised. |
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