Flashcards
7.3 Genetic manipulation
Flashcards do conjunto (10)
- 1Name the three modern cloning techniquesTissue culture
Embryo transplants
Adult cell cloning - 2What is tissue culture?using small groups of cells from part of a plant
- 3What are embryo transplants?Splitting apart cells from a developing animal embryo before they become specialised, then transplanting the identical embryos into host mothers
- 4What is adult cell cloning?The nucleus is removed from an unfertilised egg cell and the nucleus from an adult body cell, eg skin cell, is inserted into the egg cell. An electric shock then acts as the catalyst for the egg cell to begin to divide to form embryo cells. These embryo cells contain the same genetic information as the adult skin cel;. when the embryo has developed into a ball of cells, it is inserted into the womb of an adult female to continue its development
- 5In genetic engineering, genes from the chromosomes of humans and other organisms can be 'cut out' and transferred to cells of other organisms. How do you do this process?Enzymes are used to isolate the required gene
This gene is inserted into a vector usually bacterial plasmid or a virus
The vector is used to insert the gene into the required cells - 6Why might genes be transferred to the cells of animals, plants or micro organisms at an early stage in their development?So that they develop with desired characteristics
- 7What are crops that have had their genes modified in this way called?Genetically modified crops
(GM crops) - 8What is the purpose of GM crops?To create plants that are resistant to insect attack or to herbicides
- 9Do GM crops show an increases or decreases yields?Increased
- 10What are the concerns about GM crops?The effect on the populations of wild flowers and insects
The uncertainty about the effects of eating GM crops on human health
Informações
- Descrição
- GCSE Biology (7 Variation and inheritance) FlashCards sobre 7.3 Genetic manipulation, criado por Anisha Rai em 03-05-2016.
- Criado por
- Anisha Rai · mai 2016
- Atualizado
- 10 jun 2016
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