Evolution - Change in the form of organisms / Change in the frequency of alleles
Natural selection - Mechanism of evolution (Proposed by Charles Darwin)
Change in allele frequency by means of natural selection
-> e.g. Skin / lung infections by Staphylococcus aureus
Original form is susceptible to being killed by metheciline (antibiotic)
Random mutation - gives it ability to break down metheciline (resistant)
2 forms - (1st definition of evolution)
2nd form increases because the 1st form dies out
Natural selection:
- Random mutation - Produces MRSA form
- Non-random selection - Antibiotic selecting MRSA to be killed
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