The term 'IT MAY BE DOMINANT' can be solved by the crossword solutions of 'GENE' (4 letters) and 'TRAIT' (5 letters). A GENE is a unit of heredity that is passed from parent to offspring and is held to determine some characteristic or TRAIT of the offspring. A TRAIT is a distinguishing quality or characteristic, typically one belonging to a person. In genetics, a dominant TRAIT is one that is expressed in an organism's phenotype when only one copy of the GENE is present.