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Transformation of Host Cells- Amrita University

▶ This video channel is developed by Amrita University's CREATE http://www.amrita.edu/create ▶ Subscribe @    / amritacreate      / amritavlab   ▶ Like us @   / createatamrita   ▶ For more Information @ http://vlab.amrita.edu/index.php?sub=... ▶ Amrita Virtual Lab Project website http://vlab.amrita.edu Transformation was first demonstrated in 1928 by British bacteriologist Frederick Griffith. Griffith discovered that a harmless strain of Streptococcus pneumoniae could be made virulent after being exposed to heat-killed virulent strains. Griffith hypothesized that some "transforming principle" from the heat-killed strain was responsible for making the harmless strain virulent. Transformation process allows a bacterium to take up genes from its surrounding environment; i.e., transformation involves the direct uptake of fragments of DNA by a recipient cell and the acquisition of new genetic characteristics.