Wavy hair is a very easy example that this is false. It's a merge between straight and curly hair. Our traits tend to mix and blend together, it's not so simple. Everybody isn't just tall or short, one or the other. Everybody is a different height because it's a mid between your parents.
Delta and it is called this because it looks like the Delta symbol
Organism like frog and toads. Maybe even all Amphibians.
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