Biology Dictionary

  • Freemartin

    Freemartin

    A female calf that is born twin to a male calf and often exhibits reproductive abnormalities due to hormonal exposure in utero.

  • Free-nuclear embryo

    Free-nuclear embryo

    An early stage in embryo development where the nucleus is not yet enclosed by a cell membrane.

  • Frequency

    Frequency

    The number of occurrences of a repeating event, often used in genetics to describe allele frequencies in a population.

  • Fringillid

    Fringillid

    A member of the family Fringillidae, which includes finches and other small songbirds.

  • Fritillaria

    Fritillaria

    A genus of plants in the lily family, often characterized by bell-shaped flowers.

  • Frond

    Frond

    The leaf or leaf-like part of a plant, especially in ferns or other vascular plants.

  • Frontal

    Frontal

    Referring to the front, or the forehead region of the body.

  • Frontal bone

    Frontal bone

    A bone in the skull that forms the forehead and the upper part of the eye sockets.

  • Frontal lobe

    Frontal lobe

    The part of the brain located at the front of the cerebral cortex, responsible for reasoning, planning, and motor functions.

  • Frontoparietal

    Frontoparietal

    Relating to both the frontal and parietal regions of the brain or skull.