Evolution Flashcards
1
Q
What is evolution?
A
Evolution is how inherited characteristics in organisms change from generation to generation.
2
Q
What can changes in inherited characteristics lead to?
A
Differentiation between species (+ve evolution) or extinction of species (-ve evolution).
3
Q
Explanations for evolution?
A
Theories of:
- survival of the fittest & natural selection
- genetic mutation
- genetic drift
4
Q
What idea did Darwin put forward?
A
The idea that evolution takes place through natural selection.
5
Q
What is natural selection?
A
The idea that some characteristics are inherited because they aid survival of an organism so that there can be reproduction & passing on of genes, whereas some characteristics don’t aid survival in the environment so there is no reproduction of those genes.
