Topic 16- Evolution And Natural Selection Flashcards
What is natural selection?
Where plants an animals become better adapted to their enviroment
What is evolution?
The gradual change of a species
Who proposed the theory of natural selection?
Charles darwin
Name the 8 theories of natural selection
1) all organisms show variation
2) there is competition for survival
3) survival of the fittest where variation enables organisms to adapt to their environment
4) genes will be passed onto offspring
5) individuals that are better adapted will have a better chance of survival, their genes are more likely to be passed on
6) the next generation will have better adapted genes
7) over a long period of tim, populations become better adapted provided the environment doesn’t change
8) organisms that are less suited to their environment will become extinct
What is an example of evolution?
Warfarin resistant rats