Clones in nature
- Created by: vezting
- Created on: 08-12-15 11:12
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- Clones in nature and plants
- clones
- exact copy, carries identical genetic material, derived same DNA
- prokaryotes divide- Binary fission
- DNA replicates, splits in two
- Eukaryotes is mitosis
- advantages of asexual reproduction
- quick, takes advantage of resources + environment
- all offspring have favourable characteristics
- can complete if sexual cannot happen
- disadvantages of asexual reproduction
- reduces gene pool
- all clones suseptible
- vegetative propagation
- structures 1 individual can grow, provide new individual
- English elm
- 1: Healthy elm with sucker
- 2:elm shows Dutch Elm Disease
- 3:main stem dead, suckers produced in stress
- 4:clones shows symptoms of Dutch elm also
- artificial propogation
- cuttings: stem cut at nodes, treated with hormones
- grafting: shoot section of woody plant joined to already growing root/stem. graft identical to previous plant, not graft plant
- culture
- 1: tissue taken from shoot- called explant.
- 2: explant into nutrients growth medium
- 3: cells divide, do not differentiate. bundle of cells is calus
- 4: callus removed, placed into hormone growth medium
- 5: growing shoots transferred to concentrated hormones for root growth
- 6: plants move to green house, acclimatise then outside
- clones
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