DNL In the beginning
Montāžas Teksta
- Hello everyone, my name is Darwin, I'm a scientist. Let’s talk about the theory of evolution. I discovered two major forces : natural selection and speciation. Have a good read !
- First of all, natural selection is the process by which heritable traits help an organism to survive and reproduce.
- Hi I’m Bobby the rabbit !
- In the case of my family, some rabits had grey coats, therefore, they were cought by an eagle! Indeed, they were more visible on the snow...
- Speciation is the second major force. It is a set of different isolations. The consequences of these isolations are that the group splits into two different species
- There are different kinds of isolation : isolation by behavior, localization, habitat and finally geographic isolation.
- Consequently, they had to adapt to their new habitat, some of them had to get bigger to appear more dangerous to their predators. They could not reproduce anymore because they became too different. They are now two different species.
- My family has been impacted by speciation. A river separated us.
- Of course Darwin didn’t discover all the major forces. We also participated in the discovery of two other major forces: mutation and genetic drift.
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