Evolution Theory
Storyboard Text
- For that, we will see 4 different mechanisms :
- 1- Mutation
- 2- Natural Selection
- Hi everyone, I'm Youmi, the hummingbird and today, I want to explain you, the Evolution Theory. Thanks to my explanation you will be a CHAMPION of science !!!
- 4- Speciation
- 3- Genetic Drift
- First, I will explain to you MUTATION. The element you have to know, it's a random modification of the DNA. If you don't know DNA, it's normal ! We can compare it to a recipe. The allele, which composes the DNA, is like an ingredient. If it's different the cake will be change. So it's the same in the DNA of living beings. The allele has random modifications and children can have the same modification. It can be an heriditary character.
- Oh, I have seen on my computer an article about the NATURAL SELECTION dicovered by Darwin ! I have a great exemple to explain that. I will show you now !
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- DARWIN
- If there are more red ladybird, there will be more red ladybird babies. That's how, the yellow ladybird species can disappear.
- Did you see that, the yellow ladybird has just been eaten by the bird, because it wasn't camouflaged in the flowers wich are red. That's why red ladybird has more chances to survive. So, this is NATURAL SELECTION.
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- Noooo, the fisherman has caught the last two yellow fish. He won't be able to get any more yellow fishes. This is random. This is GENETIC DRIFT.
- SPECIATION begging because of natural hazard like mountains, rivers, forests,... For exemple here, all butterflies are divided in two groups.
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