CHARLES DARWIN THEORY OF EVOLUTION

what theory did charles darwin propose

theory of evolution by natural selection

where did darwin publish his ideas

On the Origin of Species (1859).

what was the theory of evolution by natural selection

- individual organisms within a particular species show a wide range of variation for a characteristic

- Individuals with characteristics most suited to the environment are more likely to survive to breed successfully.

• The characteristics that have enabled these individuals to survive are then passed on to the next generation.

-Overtime the beneficial characteristics became more common in the population and the species evolved.

- the organisms that are less well adapted to their enviroment was less likely to survive and reproduce passing their genes onto the next person.

why was the theory of evolution only gradually accepted

- the theory challenged the idea that God made all the animals and plants that live on Earth

- there was insufficient evidence at the time the theory was published to convince many scientists

- the mechanism of inheritance and variation was not known until 50 years after the theory was published.

theory of evolution

all of todays species have evolved from simple life forms that first started to develop 3 billion years ago.

what did lamarck propose

changes that occur in an organism during its lifetime can be inherited, we now know in the vast majority cases of inheritance this can not occur.

how did charles darwin propose his theory

used the observations he made on all round the world trip,

along with experiments , discussions and new knowledge of fossils and geology