Sketches of the East Africa Campaign Robert Valentine Dolbey. Garnets are plentiful in the Lindi district, and agates, topaz, moonstone and other precious stones are found in the colony. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 7 Various.
The gene that produces Bt toxin is introduced into such plants by recombinant DNA technology, and results in the selective killing of crop-feeding insects. This development has had a major economic impact and reduced the expenses of pesticides used per year and has increased the longevity and success of several crops.
V(D)J recombination in organisms with an adaptive immune system is a type of site-specific genetic recombination that helps immune cells rapidly diversify to recognize and adapt to new pathogens.n both meiotic and mitotic cells, recombination between homologous chromosomes is a common mechanism used in DNA repair. Genetic recombination and recombinational DNA repair also occurs in bacteria and archaea, which use asexual reproduction.