Evolution theory by Charles Darwin is probably one of the most significant theories in the world of biology. The theory is emphasizing the fact that every single organism ever live on this earth changes from time to time. The change is caused by natural selection and the alteration in organism’s traits. Below are some of essential facts about the theory.
How Darwin “Didn’t Believe” in God
The founder of evolution theory is Charles Darwin. Well, the British naturalist gained the attention when he published his famous book “On the Origin of Species”. With the book, he made numerous people shocked by making statement against God.
When he published the book, most philosophers believe that life is created by supernatural being, like God. However, Darwin said no to them. He stated every species presents on earth slowly evolved over million years from common ancestor.
In addition, even though a lot of people accused Darwin did not believe in God, he has changed the way people viewed the change in life. His ideas about evolution and natural selection always make sense to this very day.
The Darwin’s Thought on Natural Selection
Darwin called the process slowly evolved species as “natural selection” because he believed nature had everything to do with it. Basically, Darwin stated that the individuals successfully passed the traits to the descent were the ones best adapted.
Furthermore, Darwin also believed numerous individuals on earth had different form from their ancestors. They were slowly transformed into “something else” over time. Some of the transformation examples are:
- Reptiles into birds
- Fish into lizards
- Apes into humans
The Heritable Physical and Behavioral Traits
In this case, genes control the heritable traits that responsible for the evolution. These traits are both physical and behavioral. These traits can be inherited by the offspring. However, the traits resulted from interaction between environment and individual is not heritable.
Say for example, the facial shape is fully genetic. It is totally heritable and passed on to the next generation from time to time. However, if an individual has suntan, which is the result of the interaction between individual and environment (sunlight), the suntan will not get passed on.
“Survival of the Fittest”
Still according to Darwin’s theory, nature has the ability to select which individual trait will survive.
Essentially, the individual that can adapt to nature is the one that survives. Nature has limited resources and all organisms need to compete against nature. Yes, they only have two choices: adapt or extinct.
This is where the famous phrase by Darwin “survival of the fittest” is found. He believed that human is the result of ape’s attempt to adapt with nature and its changes.
Those are some of facts that you need to know about this theory. If you are into biology, learning more about the theory is always something you can fully enjoy. It is because, besides those facts above, there are still plenty of interesting things you can dig from this evolution theory.