Darwinian Evolution
Darwin's theory of evolution showed that man, the apes and monkies have all evolved from a common ancestor
The Galapagos Islands and how did they help Darwin formulate his ideas on evolution
On this isalnd Drawin saw different finches, where each had its different and unique shape
The animals on this island were uninhabitted by humans i.e. they had no fears towards humans
About Darwin:
He was born on February the 9th 1809
He died on April 19th 1882
H observed that the individual members of a particular species are not identical but can differ in many ways
What is evolution?
Evolution explains that what we see today is different from what existed in the past
Biological evolution is concerned with changes in living things during the history of life on earth.
Darwin called the process of evolutionary change that gives rise to new species "descent with modification".
Natural Selection
is the the process by which new species were brought into existence
Darwin propsed that individuals that have heritable characteristics are more likely to survive and reproduce in their particular enviroment
Evolution show us that species are not immutable but they change overtime through natural selection
Artificial Selection
It is the intentional reproduction of individuals in a population that have desirable traits
It had a marked effect on the form of domesticated plants and animals
Evolution according to Darwin was studied on four scales
Astronomical
Biological
Geological
Chemical
Evoltuion and the process of Science
Observation and description
Communication to other scientists
Explanation (hypothesis)
Test the hypothesis
Species
a group of related organisms that share a more or less distinctive form and are capable of interbreeding and producing an offspring that interbreeds
they arose by common descent, as a result of divergence from a common stock
Evolution is considered science because it is observable and testable
The fossil record
Study of living species
Artificial selection in the laboratory
Genetic mutation