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This is called co-dominance. It is when neither alleles are dominant or recessive. Therefore, both traits are expressed.

Ex. Some horses have two hair colors. For example, if two hairs are next to each other, one hair would be red, and the other would be brown.

I am taking a class on this and free/attached earlobes are not co-dominant, its a recessive/dominant trait. I also have one free and one attached earlobe and am not sure how it happens, all i know is that free earlobes are dominant and attached are recessive.

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Q: You have one free earlobe and one attached how does that happen?
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