Evolution

Mutations, Darwin, Natural Selection, & Evolution

Charles Darwin

Darwin was the father of the evolutionary theory. He traveled on the HMS Beagle to the Galapagos Islands. He discovered that different animals on different islands had different physical characteristics. This demonstrates evolution. The animals changed over time. They adapted to their environment.

Mutations

Mutations occur to make evolution.

Natural Selection

Natural selection is a mechanism for change in a population. It is survival of the fittest. The strongest survive to pass on their traits to their offspring.


Causes of Evolution

Genetic Drift is one way evolution can be changed. Genetic drift is just by chance. Another way mutations. Also Natural Selection, and immigration and emigration. There are two ways evolution can occur: gradualism and punctuated equilibrium.

Types of Evolution

There are two types of evolution: divergent and convergent.

1. Divergent: Species that have a common ancestor but have grown apart because of evolution.

2. Convergent: Species have no common ancestor but have grown together because of evolution.

These animals grow together because of their environment.