t He then took the R strain (rough strain) and injected it into the mice and found that they did not contract the pneumonia illness and survived the insertion of the strain
The injection of dead S bacteria by Griffith resulted in no harmful effects on the mice. However, when the live R strain was injected along with the dead S bacteria, it caused the mice to become sick and die. This experiment demonstrated that the genetic material from the dead S strain could transform the harmless R strain into a deadly one.
Fred Griffith discovered that the harmless R strain of Streptococcus pneumoniae could be transformed into the deadly S strain when mixed with heat-killed S strain bacteria. This experiment provided evidence for the concept of bacterial transformation, where genetic material can be transferred between different strains of bacteria.
Fred Griffith found that genetic information could be transferred between different strains of bacteria, specifically between the harmless R strain and the virulent S strain of bacteria. This led to the discovery of transformation, a process where genetic material is exchanged between bacteria.
The molecule that caused transformation in Griffith's mouse experiment was DNA. When heat-killed S strain bacteria (which had DNA) were mixed with live R strain bacteria (which did not), the DNA from the dead S strain bacteria was able to transfer genetic information to the live R strain bacteria, making them pathogenic.
The molecule that caused transformation in Griffith's pneumonia experiment was DNA. Specifically, it was the transfer of DNA from heat-killed virulent bacteria to live non-virulent bacteria that resulted in the transformation of the non-virulent bacteria into a virulent form.
This experiment was conducted by Frederick Griffith in 1928. He observed that when he mixed a harmless strain of bacteria with a heat-killed virulent strain, the harmless bacteria were transformed into a virulent form. This led to the hypothesis that something in the heat-killed bacteria had transformed the live bacteria.
The injection of dead S bacteria by Griffith resulted in no harmful effects on the mice. However, when the live R strain was injected along with the dead S bacteria, it caused the mice to become sick and die. This experiment demonstrated that the genetic material from the dead S strain could transform the harmless R strain into a deadly one.
Fred Griffith discovered that the harmless R strain of Streptococcus pneumoniae could be transformed into the deadly S strain when mixed with heat-killed S strain bacteria. This experiment provided evidence for the concept of bacterial transformation, where genetic material can be transferred between different strains of bacteria.
Fred Griffith found that genetic information could be transferred between different strains of bacteria, specifically between the harmless R strain and the virulent S strain of bacteria. This led to the discovery of transformation, a process where genetic material is exchanged between bacteria.
Griffith discovered that the mice still died, indicating that the harmless bacteria had been transformed into disease-causing bacteria by a hereditary factor from the heat-killed bacteria. This experiment laid the foundation for the discovery of bacterial transformation by Avery, MacLeod, and McCarty.
The unexpected result was that the previously harmless rough strain bacteria were able to take up genetic material from the heat-killed smooth strain bacteria, becoming virulent. This demonstrated the concept of bacterial transformation and laid the foundation for understanding DNA as the genetic material.
The molecule that caused transformation in Griffith's mouse experiment was DNA. When heat-killed S strain bacteria (which had DNA) were mixed with live R strain bacteria (which did not), the DNA from the dead S strain bacteria was able to transfer genetic information to the live R strain bacteria, making them pathogenic.
The disease-causing strain of bacteria grew into smooth colonies on culture plates, whereas the harmless strain produced with rough edges.
The process is called transformation, and it was the first direct evidence that genetic information could be transferred between bacteria. In Griffith's experiment, the heat-killed S strain released its genetic material, which was then taken up by the live R strain, converting it into the deadly S strain.
In Griffith's experiment, non-pathogenic bacteria were transformed into pathogenic bacteria by being exposed to heat-killed pathogenic bacteria, a process now known as transformation. This led to the discovery of genetic material transfer between bacteria.
Frederick Griffith was a British bacteriologist. He discovered that hereditary system of one strain of bacteraia. His experiment showed how bacteria changed its form and function. It is called Griffith's experiment which he carried out in 1928
it's called transformation!! lol