Natural selection and genetic modification
- Natural selection
- Natural selection
- Variation by mutation
- Survive and reproduce
- Pass on alleles
- Evolution
- Inherited change
- Many generations
- Antibiotic resistance
- Resistant mutant
- Antibiotic selection pressure
- Population becomes resistant
- Natural selection
- Evidence
- Fossils
- Ardi 4.4 mya
- Lucy 3.2 mya
- Leakey 1.6 mya
- Stone tools
- Become more complex
- Dated from rock layers
- Classification
- Five kingdoms
- Three domains
- Genetic analysis
- Fossils
- Breeding and cloning
- Selective breeding
- Choose parents
- Repeat generations
- Higher yield
- Drawbacks
- Less variation
- Inbreeding
- Selective breeding
- Genetic engineering
- Modify the genome
- Desirable characteristic
- Gene transferred
- Main stages Higher tier
- Restriction enzyme
- Sticky ends
- Ligase
- Vector
- Modify the genome
- Agriculture and evaluation
- Benefits
- More food
- New medicines
- Risks and ethics
- Unknown effects
- Practical issues
- Ethical concerns
- Benefits