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Szukanie
Artificial selection
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Tekst Storyboardowy
Cows produce milk
Recognized trait
Start breeding
The cows produce milk on a farm and in the population, one cow produces more milk than the others.
Produced offspring
The farmer notices that one of the cows produces a major more amount of milk than the other which means more profit for the farmer.
Some have good traits
The farmer decides to breed the cow that produces a lot of milk with another cow to get the offspring to produce more milk than normal.
Eventually all carry good trait
When the cows finally produce offspring they produce many calves and some of them have the desired trait.
The calves grow up and some produce a lot of milk while some produce the regular amount of milk.
As generations go on the desired trait in the cows that produce more milk are the only cows left and they all produce a lot more milk.
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