Please enable JavaScript.
Coggle requires JavaScript to display documents.
Evolution theories - Coggle Diagram
Evolution theories
Lamarckism : Species transform because of the environment induced modifications of the place where they live. https://youtu.be/6AHuJ543gGs
Examples :
-According to lamarck, a short - necked ancestor of a giraffe began to feed on leaves and trees each time higher . This stretched his neck, characteristic that was inherited by offspring 
-The horns of male deer are very large to use. As fights with other deer are frequent, they develop and become more resistant.
Characteristics
-
- Conditions of the enviroment change and generate new needs
Neo-Darwinism : Processes are produced by the changes present in the genetic composition of populations. https://youtu.be/sfPHIQx_02U
Characteristics
Sexual reproduction increase varation, it generates new gene combinations.
-
Examples
The ancestor of the horse does not have a hoof, if it did not have fingers, then centuries passed until it reached the hoof
the birch butterfly is the so-called industrial melanism. This characteristic is defined as the predominant color change as a consequence of environmental change caused by industrial activity.
Darwinism : his postulate says that species evolve slowly by the action of natural selection https://youtu.be/BcpB_986wyk
-
Examples :
The color change of a chameleon when it has a prey, or to protect itself.
Galapagos Fiches : the beaks of these birds differed considerably by their diet.