Biology Dictionary

  • Dactyloid

    Dactyloid

    Resembling a finger or having a finger-like structure.

  • Dalton (Da)

    Dalton (Da)

    A unit of mass used to express atomic and molecular weights, equivalent to one atomic mass unit.

  • Dam

    Dam

    A structure built to hold back water, often for the purpose of irrigation, hydroelectric power, or flood control.

  • Dark reaction

    Dark reaction

    The phase of photosynthesis that does not require light, in which carbon dioxide is fixed into glucose through the Calvin cycle.

  • Darwinian fitness

    Darwinian fitness

    The ability of an organism to survive and reproduce in its environment, contributing its genes to the next generation.

  • Darwinism

    Darwinism

    The theory of evolution by natural selection, proposed by Charles Darwin, which suggests that species evolve over time through the differential survival and reproduction of individuals with favorable traits.

  • Data

    Data

    Factual information, often in the form of measurements or observations, collected for analysis and interpretation.

  • Daughter cells

    Daughter cells

    The cells produced from the division of a parent cell, either through mitosis or meiosis.

  • Daughter chromosomes

    Daughter chromosomes

    The individual chromosomes produced during cell division, each containing a complete set of genetic material.

  • Daughter nuclei

    Daughter nuclei

    The nuclei formed after cell division, each containing a full set of chromosomes.