Darwin's Theory of Evolution

Darwin's Theory of Evolution

1. In the 18th century people began to accept that two organisms evolve into one.

   • In 1859 Darwin Published a book

2. Genetic Variation

   • Characteristics of individuals vary due to differences in genes

3. Environmental change

   • Conditions in an area change, lack of resources (food) causes more competition between organisms.

4. Natural Selection

   • By chance, the variation of some individuals make them better at coping than others
     • 'Survival of the fittest'

5. Inheritance

   • Survivors breed and pass on their variations, to their offspring, so the next generation contains more individuals with better adapted variations

6. Evolution

   • If enviornmental conditions remain changed, natural selection occurs over and over again, and a new specie evolves with all the individuals having the better adapted variations

7. Darwin (1809-1832)