Dictionary > Hfr strain

Hfr strain

Definition
noun
A strain of bacterial that possesses the F factor integrated into the bacterial genome, hence, when it conjugates with another bacterium, it attempts to transfer a copy of the F factor as well as a portion of or the entire chromosome to the recipient bacterium.
Supplement
Hfr stands for high frequency of recombination first described by the population geneticist, Luca Cavalli-Sforza. The bacterial cell that acquires F plasmid and incorporates to the bacterial chromosome through crossover, the cell is now designated as Hfr.
During conjugation, the Hfr bacterium would attempt to transfer its entire DNA to the Fbacterium. However, since the mating bridge is structurally fragile the genetic transfer is often incomplete. Hence, the recipient bacterium may only receive a portion of, and rarely the entire, bacterial genome of the donor Hfr bacterium.
Also called:

See also:

  • F factor


  • You will also like...

    Balanced Diet
    A Balanced Diet – Minerals and Proteins

    Proteins and minerals can be derived from various dietary sources. They are essential for the proper growth and developm..

    Geological Periods
    Geological Periods

    Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..

    Angle Oak Tree
    Seed Plants

    Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..

    Sugar Homeostasis
    Sugar Homeostasis

    The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..

    New Zealand Flora & Fauna
    Ecology & Biodiversity: New Zealand Flora & Fauna

    New Zealand is known for its unique biodiversity, caused by its remarkable geography and geologic history. Breaking away..

    Freshwater aquatic plankton
    Freshwater Communities & Plankton

    Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..

    Related Articles...

    No related articles found

    See all Related Topics