Dictionary > F-positive bacterium

F-positive bacterium

Definition
noun, plural: F+ bacteria
A bacterium with F factor existing as a plasmid and not integrated in the bacterial genome.
Supplement
The F in F factor stands for fertility and the presence of F factor as a plasmid is the distinctive feature of F+ bacteria. During conjugation, F+ bacterium transfers a copy of F factor DNA with F bacterium, making the latter capable of producing a sex pilus and thereby also making it capable of conjugation with other bacteria.
Compare (with other groups of bacteria in terms of F factor):

See also:

  • F factor


    You will also like...

    "Cronopio dentiacutus", a prehistoric mammal (an illustration)
    Mammalian Ancestors

    Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..

    Chromosomes X and Y and Sex Determination
    Chromosomes X and Y and Sex Determination

    This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..

    Physical growth
    Physical Development in Humans

    This tutorial elaborates on the physical development of humans, particularly from puberty to adulthood. Read this tutori..

    3D rendering of an antibody
    Passive and Active Types of Immunity

    Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In thi..

    DNA carries genes coding for proteins
    Genetic Information and Protein Synthesis

    Genes are expressed through the process of protein synthesis. This elaborate tutorial provides an in-depth review of the..

    Buttress roots
    Roots

    This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..