NATURAL SELECTION

• WHAT IS NATURAL SELECTION?

  process that leads to evolution in populations
• WHAT IS EVOLUTION?

  change in allele frequency over many generations in a population
• WHAT DOES NATURAL SELECTION RESULT IN?

  species becoming better adapted to their environment
• WHAT ARE THE TYPES OF ADAPTION?

  anatomical, physiological, behavioural
• PROCESS OF NATURAL SELECTION?

  1. New alleles for a gene are created by random mutations
  2. If new allele increases chances of individual survival in that specific environment
  3. More likely to survive and reproduce
  4. Reproduction passes on advantageous allele to next generation
  5. As a result, over many generations, new allele increases in frequency in the population