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zoology

(Encyclopedia)zoology, branch of biology concerned with the study of animal life. From earliest times animals have been vitally important to man; cave art demonstrates the practical and mystical significance animal...

mutation

(Encyclopedia)mutation, in biology, a sudden, random change in a gene, or unit of hereditary material, that can alter an inheritable characteristic. Most mutations are not beneficial, since any change in the delica...

genetics

(Encyclopedia)genetics, scientific study of the mechanism of heredity. While Gregor Mendel first presented his findings on the statistical laws governing the transmission of certain traits from generation to genera...

Leakey, Richard Erskine Frere

(Encyclopedia)Leakey, Richard Erskine Frere frĭr [key], 1944–2022, Kenyan paleoanthropologist, conservationist, and ...

jurisprudence

(Encyclopedia)jurisprudence jo͝orˌĭspro͞odˈəns [key], study of the nature and the origin and development of law. It is variously regarded as a branch of ethics or of sociology. Many of the major systematic ph...

Comte, Auguste

(Encyclopedia)Comte, Auguste ōgüstˈ kôNt [key], 1798–1857, French philosopher, founder of the school of philosophy known as positivism, educated in Paris. From 1818 to 1824 he contributed to the publications ...

Eve, in genetics

(Encyclopedia)Eve, in genetics, popular term for a theoretical female ancestor of all living people, also known as Mitochondrial Eve. In 1987 biochemist Allan C. Wilson proposed that all living human beings had inh...

safety movement

(Encyclopedia)safety movement, widespread effort to prevent accidents that followed the increasing number of casualties in industry, traffic and transportation, and homes arising out of the Industrial Revolution an...

squid

(Encyclopedia)squid, carnivorous marine cephalopod mollusk. The squid is one of the most highly developed invertebrates, well adapted to its active, predatory life. The characteristic molluscan shell is reduced to ...

Stephen, Sir Leslie

(Encyclopedia)Stephen, Sir Leslie, 1832–1904, English author and critic. The first serious critic of the novel, he was also editor of the great Dictionary of National Biography from its beginning in 1882 until 18...