AQA · Biology · 8461
GCSE Biology: Cloning
Inheritance, variation and evolution · AQA GCSE Biology (8461), specification point 4.6.2.5. Cards are generated from the exam board's own specification for "Cloning", and every card links back to the page it came from. Separate science only. Specification © AQA — used with attribution.
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What is tissue culture in plant cloning?
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Growing identical new plants from small groups of cells taken from part of a plant.
Give one reason tissue culture is important for plants.
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It preserves rare plant species (or is used commercially in nurseries to produce many plants).
What is the simple, traditional cloning method gardeners use to produce many identical plants?
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Cuttings — taking a piece of a parent plant and growing it into a new, identical plant.
Describe how embryo transplants are used to clone animals.
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Cells from a developing embryo are split apart before they specialise, and the identical embryos are transplanted into host mothers.
In embryo transplants, embryo cells are split apart before they become ?.
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specialised
What is the first step of adult cell cloning?
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The nucleus is removed from an unfertilised egg cell.
In adult cell cloning, the nucleus from an adult body cell (e.g. a skin cell) is inserted into an enucleated ?.
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egg cell
In adult cell cloning, what stimulates the egg cell to divide into an embryo?
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An electric shock.
Why is a clone produced by adult cell cloning genetically identical to the donor animal?
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The embryo cells contain the same genetic information as the adult body cell whose nucleus was used.
In adult cell cloning, what happens once the embryo has developed into a ball of cells?
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It is inserted into the womb of an adult female to continue its development.
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