Biology Dictionary

  • Hexaploid

    Hexaploid

    An organism with six sets of chromosomes, typically resulting from polyploidy.

  • Hexaploidy

    Hexaploidy

    The condition of having six sets of chromosomes in a cell, which can occur through the process of polyploidy.

  • Hexose

    Hexose

    A type of sugar with six carbon atoms, such as glucose or fructose.

  • Hfr

    Hfr

    High-frequency recombinant; a bacterial strain that has a plasmid integrated into its chromosome, facilitating the transfer of genetic material during conjugation.

  • Hgprt

    Hgprt

    Hypoxanthine-guanine phosphoribosyltransferase, an enzyme involved in purine metabolism, important for DNA and RNA synthesis.

  • Hibernation

    Hibernation

    A state of reduced metabolic activity in animals, typically during cold weather, in which they conserve energy by significantly lowering their body temperature.

  • Hidradenoma

    Hidradenoma

    A benign tumor of the sweat glands, typically appearing as small, firm, and mobile lumps in the skin.

  • Heredity

    Heredity

    The passing of traits from parents to offspring through genes.

  • Heritability

    Heritability

    The proportion of variation in a trait that can be attributed to genetic differences within a population.

  • Hermaphrodite

    Hermaphrodite

    An organism that possesses both male and female reproductive organs, allowing it to produce both eggs and sperm.