Biology Dictionary

  • Gastrovascular cavity

    Gastrovascular cavity

    A central digestive compartment in certain invertebrates, such as cnidarians, which serves both digestive and circulatory functions.

  • Gastrula

    Gastrula

    An early stage of embryonic development in animals, characterized by the formation of three germ layers.

  • Gastrulation

    Gastrulation

    The process during early development in which the embryo forms the three primary germ layers (ectoderm, mesoderm, and endoderm).

  • Gazelle

    Gazelle

    A small to medium-sized antelope found in Africa and Asia, known for its graceful movements and speed.

  • Gc-rich region

    Gc-rich region

    A region in DNA or RNA that has a high concentration of guanine (G) and cytosine (C) bases, often associated with specific regulatory functions.

  • Gdp

    Gdp

    Guanosine diphosphate, a nucleotide involved in energy transfer within cells, formed by the hydrolysis of GTP.

  • Geiger-muller counter

    Geiger-muller counter

    A device used to detect and measure ionizing radiation, such as alpha, beta, and gamma radiation.

  • Gel electrophoresis

    Gel electrophoresis

    A laboratory method used to separate molecules, such as DNA, RNA, or proteins, based on their size and charge by passing them through a gel matrix under an electric field.

  • Gemma (pl. Gemmae)

    Gemma (pl. Gemmae)

    A small, asexual reproductive body produced by certain plants, fungi, and algae.

  • Gemmule

    Gemmule

    A dormant, resistant stage of certain freshwater sponges that can survive unfavorable conditions and later germinate into a new organism.