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topic 4
tissue culture
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what are the methods of plant cloning
Taking plant cuttings
Tissue culture
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Tissue culture
A method of growing living tissue in a suitable medium
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Growing plants using tissue culture
1. Select a plant that shows
desired characteristics
2. Cut multiple small sample pieces from
meristem
tissue
3. Grow in a
petri
dish containing
growth
medium
4. Transfer to compost for further growth
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Ensure
aseptic
conditions to prevent
contamination
by microorganisms when preparing tissue cultures
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Growth medium
Contains nutrients
and
growth hormones
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Advantages of growing plants by tissue culture
simple and fast process , can grow plants quickly
Enables the growth of many plant clones with the same desirable characteristics
Useful in the preservation of endangered plant species
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Disadvantages of growing plants by tissue culture
Reduction in the
gene
pool
Plant clones often have a
low
survival rate
Could unknowingly increase the presence of
harmful
recessive alleles
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Preparing animal tissue cultures
1.
Extract
a sample of tissue from an animal
2. Use
enzymes
to separate cells within the sample
3. Grow in a
culture
vessel containing
growth medium
4. Once
grown
, store the sample
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