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  1. Genetics | History, Biology, Timeline, & Facts | Britannica

    Dec 14, 2025 · Genetics, study of heredity in general and of genes in particular. Genetics forms one of the central pillars of biology and overlaps with many other areas, such as agriculture, …

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

    Dec 2, 2025 · Hence, in genetic terms evolution consists of changes in the organism’s hereditary makeup. Evolution can be seen as a two-step process. First, hereditary variation takes place; …

  3. DNA | Definition, Discovery, Function, Bases, Facts, & Structure ...

    Dec 11, 2025 · Deoxyribonucleic acid (DNA) is an organic chemical that contains genetic information and instructions for protein synthesis. It is found in most cells of every organism.

  4. Gene | Definition, Structure, Expression, & Facts | Britannica

    Dec 4, 2025 · The sequence of bases along a strand of DNA determines the genetic code. When the product of a particular gene is needed, the portion of the DNA molecule that contains that …

  5. genetics - Kids | Britannica Kids | Homework Help

    Genetics is the study of heredity, or how certain features pass from parents to their offspring, or young. Every kind of plant and animal produces young of its own species, or type.

  6. genetics summary | Britannica

    Genetics, study of heredity in general and of genes in particular. Genetics forms one of the central pillars of biology and overlaps with many other areas, such as agriculture, medicine, and …

  7. Heredity | Definition & Facts | Britannica

    Nov 6, 2025 · Discoveries into the nature of genes have shown that genes are important determinants of all aspects of an organism’s makeup. For this reason, most areas of biological …

  8. Genetics - DNA, Genetic Code, Mutations | Britannica

    Dec 14, 2025 · Today a prime reason for performing classical genetics is for gene discovery—the finding and assembling of a set of genes that affects a biological property of interest.

  9. Ploidy | Chromosomes, Cell Division, Meiosis | Britannica

    Dec 24, 2025 · genetics, study of heredity in general and of genes in particular. Genetics forms one of the central pillars of biology and overlaps with many other areas, such as agriculture, …

  10. Selection | Evolution, Adaptation & Genetics | Britannica

    Genetics, a science born in the 20th century, reveals in detail how natural selection works and led to the development of the modern theory of evolution.