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Dominant traits refer to the characteristics determined by genes inherited from only one parent, as opposed to recessive traits which require two copies of the gene for expression. These traits are more likely to be observed in offspring due to their dominant nature. In the context of genetics and mutation, dominant traits may manifest as a result of genetic variations or mutations that alter gene function, leading to noticeable changes in physical appearance or behavior. Understanding dominant traits is crucial for predicting disease transmission patterns and developing effective treatment strategies in genetics and medical fields.