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  1. Biology Portal | Britannica

    The field of biology is subdivided into separate branches for convenience of study, though all the subdivisions share basic principles. Biology encompasses fields such as botany, genetics, marine …

  2. Biology | Definition, History, Concepts, Branches, & Facts | Britannica

    Dec 5, 2025 · Biology is a branch of science that deals with living organisms and their vital processes. Biology encompasses diverse fields, including botany, conservation, ecology, evolution, genetics, …

  3. Biology - Evolution, Genetics, Classification | Britannica

    Dec 5, 2025 · Biology - Evolution, Genetics, Classification: There are moments in the history of all sciences when remarkable progress is made in relatively short periods of time.

  4. Biology - Aristotle, Organisms, Cells | Britannica

    Dec 5, 2025 · Biology - Aristotle, Organisms, Cells: Around the middle of the 4th century bce, ancient Greek science reached a climax with Aristotle, who was interested in all branches of knowledge, …

  5. Evolution - Natural Selection, Adaptation, Genetics | Britannica

    Dec 2, 2025 · Since the late 20th century, scientists have used the techniques of molecular biology to modify or introduce genes for desired traits in a variety of organisms, including domestic plants and …

  6. biology - Students | Britannica Kids | Homework Help

    The scientific study of living things is called biology. Biologists strive to understand the natural world and its living inhabitants—plants, animals, fungi, protozoa, algae,…

  7. Biology - Evolution, Genetics, Species | Britannica

    Dec 5, 2025 · Biology - Evolution, Genetics, Species: In his theory of natural selection, which is discussed in greater detail later, Charles Darwin suggested that “survival of the fittest” was the basis …

  8. Cell - Differentiation, Organelles, Cytoplasm | Britannica

    Dec 10, 2025 · Over a period of time, the genetic information in RNA sequences was transferred to DNA sequences, and the ability of RNA molecules to replicate directly was lost. It was only at this point …

  9. Power | Definition, Social Dynamics, Authority, Weber, Foucault ...

    Nov 8, 2025 · Power, in political science and sociology, the capacity to influence, lead, dominate, or otherwise have an impact on the life and actions of others in society. The concept of power …

  10. Biology - Cell Discovery, Microscopy, Histology | Britannica

    Dec 5, 2025 · By basing his system on structures, such as the arrangement of toes and teeth in animals, rather than colour or habitat, Ray introduced a new and very important concept to taxonomic biology.