(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.
Cynepteris, an ancient Triassic fern. [ more ] The Triassic period began approximately 251 million years ago and extended for roughly 50 million years until 200 Ma. This period started and finished with large extinction events and dinosaur life was not as diverse as it would become later in the Jurassic period. The Triassic is divided into sections, which are: