Although most DNA is packaged in chromosomes within the nucleus, mitochondria also have a small amount of their own DNA. This genetic material is known as mitochondrial DNA or mtDNA. Mitochondria (illustration) are structures within cells that convert the energy from food into a form that cells can use.
Diction â A speakerâs (or authorâs) word choice. This term may also refer to the general type or character of language used in speech or in a work of literature.
Language is a human system of communication that uses arbitrary signals, such as voice sounds, gestures, and/or written symbols. The study of language is called linguistics. Linguists (that is, specialists in the study of language) have defined language in many different ways. Here, chronologically arranged, are a few of those definitions. Language is a purely human and non-instinctive method of communicating ideas, emotions and desires by means of voluntarily produced symbols. (Edward Sapir, Language: An Introduction to the Study of Speech. Harcourt, Brace and Company, 1921)