Comments. 1  TRAINING: Huskies are stubborn an very smart they will only do things if they know they'll get something out of it, Samoyed are kind of the same but a tad bit easier. COMPANIONSHIP: Husky and Samoyed are about the same HONESTLY every dog is about the same in this category it all depends on how well you train them.
In 1908, Ellerman and Bang demonstrated that certain types of tumors (leukemia of chicken) were caused by viruses. In 1911 Peyton Rous discovered that non-cellular agents like viruses could spread solid tumors. This was termed Rous Sarcoma virus (RSV). Bacteriophages. The most important discovery was that of the Bacteriophage era. In 1915 Twort was working with vaccinia virus and found that the viruses grew in cultures of bacteria. He called then bacteriophage. Twort abandoned this work after World War I. In 1917, D'Herelle, a Canadian, also found similar bacteriophages. Images of viruses
These bacteria were lysed to release phage progeny. The progeny of the phages that were originally labeled with 32 P remained labeled, while the progeny of the phages originally labeled with 35 S were unlabeled. Thus, the HersheyâChase experiment helped confirm that DNA, not protein, is the genetic material.Hershey and Chase showed that the introduction of deoxyribonuclease (referred to as DNase), an enzyme that breaks down DNA, into a solution containing the labeled bacteriophages did not introduce any 32 P into the solution.he results of the AveryâMacLeodâMcCarty experiment, published in 1944, suggested that DNA was the genetic material, but there was still some hesitation within the general scientific community to accept this, which set the stage for the HersheyâChase experiment.