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Genetic Variation and its Control

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GCSE Biology Mind Map on Genetic Variation and its Control, created by pru5ha on 31/08/2013.
pru5ha
Mind Map by pru5ha, updated more than 1 year ago
pru5ha
Created by pru5ha about 11 years ago
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Resource summary

Genetic Variation and its Control
  1. Variation
    1. Genes
      1. Inherited from parents
        1. Characteristics
        2. Environment
          1. Influenced by surroundings
          2. Combination
            1. Both parents ad environment
          3. Genes
            1. Nucleus of cell
              1. Control production of protein
                1. Passed from generations
                  1. Egg and sperm
                    1. Gametes
                      1. 2 to form baby
                  2. Half mum half dad
                  3. Reproduction
                    1. Sexual
                      1. Egg and spem
                        1. Fertilisation
                          1. Gametes brought together
                        2. Leads to variation
                        3. Asexual
                          1. Only one parent
                            1. No mixture of genetic information
                              1. Identical offsprings
                                1. Clones
                                2. Disadvantages
                                  1. Lack of variation
                                  2. Advantages
                                    1. Quick
                                      1. No mates needed
                                      2. Occurs in bacteria
                                      3. Plant cuttings
                                        1. Parent plant
                                          1. New plant
                                          2. Cheap
                                            1. Genetically identical
                                              1. Same characteristics
                                          3. Cloning techniques
                                            1. Tissue culture
                                              1. Parent plant
                                                1. Plant cells taken
                                                  1. Agar jelly
                                                    1. New plants
                                              2. Embryo transplants
                                                1. Animal with desired characteristics
                                                  1. Egg fertilised with sperm- in dish
                                                    1. Embryos into ball
                                                      1. Split into pairs
                                                        1. Transplanted into surrogate
                                                          1. Birth to identical offspring
                                                2. Adult cell cloning
                                                3. Genetic engineering
                                                  1. Genetically modified
                                                    1. Transfer genes to their development
                                                      1. Herbicide resistant
                                                        1. Kill competition
                                                        2. Longer shelf life
                                                          1. No decaying
                                                          2. Insect resistant
                                                            1. Stops destruction
                                                            2. Increased vitamin content
                                                              1. Prevent blindness

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