About Tyrannosaurus. Tyrannosaurus is a large, bipedal carnivore that lived approximately 66 to 68 million years ago during the late Cretaceous Period. It is considered to be one of the largest carnivorous dinosaurs to have ever walked the Earth and its very name means âtyrant lizardâ. It was first discovered in 1902 by Barnum Brown.
Transcription. Definition. noun. It is the process of transcribing or making a copy of genetic information stored in a DNA strand into a complementary strand of RNA (messenger RNA or mRNA) with the aid of RNA polymerases.Supplement.t is the process of transcribing or making a copy of genetic information stored in a DNA strand into a complementary strand of RNA (messenger RNA or mRNA) with the aid of RNA polymerases.
Transcription, the synthesis of RNA from DNA. Genetic information flows from DNA into protein, the substance that gives an organism its form. This flow of information occurs through the sequential processes of transcription (DNA to RNA) and translation (RNA to protein). During transcription, only one strand of DNA is usually copied.