(genetics). (1) (Of, or pertaining to) An allele or a gene that is expressed in an organism âs phenotype, masking the effect of the recessive allele or gene when present. (2) (Of, or pertaining to) An organism that expresses the dominant gene (or allele).
Triceratops was a species of herbivorous dinosaur. Triceratops lived during the Mesozoic Era, during the days of the late Cretaceous period. A large herbivorous dinosaur, Triceratops grazed on plants and relied on its horns and frilled head for defense, cutting away at plants with its sharp beak. were larger relatives of the Chasmosaurus. They appear in Ice Age: Dawn of the Dinosaurs, The Triceratops are shown very briefly, wading through a pond.
(trÄ«-sÄr'É-tÅps') A large herbivorous dinosaur of the genus Triceratops of the late Cretaceous Period, measuring up to 7.6 m (25 ft) in length. Triceratops had a squat, tanklike body, a beaklike mouth with a short horn over it, and a long horn over each eye. The back of its neck was covered with a wide, bony plate.