JAKARTA – The definition of evolution according to experts will be discussed this time in the Okezone.com article. Evolution is change (growth and development) gradually and slowly or little by little.
It can literally be interpreted as a gradual change. This evolution occurs both naturally and logically from the notion of genetics.
Many experts who have contributed thoughts on the theory of evolution. The following is the definition of evolution according to experts.
Plato (427-347 MS)
Plato believed in the world, which is an ideal, eternal world and an imperfect virtual world. Both worlds can be understood using the human senses.
Plato said that evolution will change the world whose organisms are already ideal and perfectly adapted to the environment.
Aristotle (384-322 MS)
Aristotle adhered to the theory of natural scales. Aristotle’s theory that all life forms are arranged in a scale or scale whose complexity increases upwards.
According to Aristotle, each life form of living beings has a ladder with the steps of each being located at different levels.
Jean Baptise by Lamarck
There are 2 main ideas, i.e. the first idea refers to the body parts that are used and not used by living beings.
With this idea, Jean reasoned that the body parts that living things continuously use to deal with certain environments will become bigger and stronger than the limbs that are used.
Secondly, related to the inheritance of traits or characteristics acquired by living beings in adapting to their environment. Inheritance of these traits or characteristics that modify the organisms they acquire during their lifetime.
For example, giraffes are said to have short necks, but as their necks were constantly stretching to get leaves on tall trees, giraffes began to lengthen.
This long neck is inherited by his descendants.
Charles Robert Darwin (1809-1882)
According to Darwin, evolution occurs through a process of natural selection. Living things that are able to adapt to nature can survive.
While living creatures that cannot adapt to nature will not survive or die.
Alfred Russell Wallace (1823-1913)
This theory is the development of a theory of natural selection proposed by Charles Darwin. Russel Wallace’s thoughts were obtained from the results of expeditions to Malaysia, Borneo (Kalimantan), Sulawesi and Maluku.
The result is that the fauna in western Indonesia is different from eastern Indonesia. Wallace and Darwin thought the crew of the giraffe had a variety of necks, some long and some short.
As a result, natural selection benefited the long-necked giraffes. giraffes that have long necks pass their offspring from generation to generation.
August Weismann
August Weismann’s theory states that changes in body cells due to environmental influences are not passed on to their offspring. Evolution involves the inheritance of genes through sex cells.
This means that evolution is related to the symptoms of natural selection on genetic factors. He demonstrated through a rat.
When she mated two mice, each tail was docked, then the adult mice’s tails were docked and mated with each other. The result is rat-tailed babies.
He conducted the experiment on up to 21 generations of mice and the results were the same.
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