Before we understood that DNA was the genetic code, scientists knew that bacteria transferred it between cells. In 1928, 25 years before the structure of DNA was solved, British bacteriologist ...

How did scientists determine that DNA is the hereditary material ... the virulence of the S strain was destroyed by heating the bacteria. Thus, he was surprised to find that mice died when ...

Coli DNA that controls the bacteria's ability to use a sugar called ... of a virus particle once it leaves the host cell. After Isolation After isolating the viruses from E. coli, the scientists ...

Silica matrices are a key technology for the purification of DNA. Today the rapid isolation of pure DNA samples is essential for a variety of molecular biology protocols in research and commercial ...