In genetics, a trait that will appear in the offspring if one of the parents contributes it. (Compare recessive trait.)
Note: In humans, dark hair is a dominant trait; if one parent contributes a gene for dark hair and the other contributes a gene for light hair, the child will have dark hair.
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| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| the offspring of a zebra and a donkey. |