Horizontal gene transfer also plays a role in the spread of virulence factors, such as exotoxins and exoenzymes, amongst bacteria. A prime example concerning the spread of exotoxins is the adaptive evolution of Shiga toxins in E. coli through horizontal gene transfer via transduction with Shigella species of bacteria.
The brothers grew up on a succession of Oklahoma and Kansas homesteads during... On this day in 1911, President Ronald Wilson Reagan is born in Tampico, Illinois. Ronald Reagan, the 40th president of the United States, served for two terms from 1981 to 1989.
Their son, Ronald Prescott Reagan alias Ron Reagan, was born six years later on May 20, 1958. Reagan also became stepmother to Maureen Reagan (1941â2001) and Michael Reagan (born 1945), the daughter and adopted son of her husband's first marriage to Jane Wyman.