- published: 15 Jun 2015
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Fred 'Punchy' Griffiths (date of birth unknown — 18 April 2000) born in Rhodesia, was a professional rugby league footballer of the 1950s and '60s, and coach of the 1960s. A South Africa international representative back, he played his club football in England for Wigan and in Australia for North Sydney, who he also captained and coached.
A fullback and skilful goal-kicker, Griffiths, nicknamed "Punchy", kicked six goals in Wigan's victory in the 1959–60 Northern Rugby Football League season's championship final. In his time with the club he amassed a total of 1,455 points.
Moving to Australia to captain and coach the North Sydney club, Griffiths' prolific point-scoring continued as he went on to become the New South Wales Rugby Football League premiership's leading point scorer for the 1963, 1964 and 1965 seasons. His last year with North Sydney was the 1966 season. In his time with North Sydney he amassed a total of 590 points, and coached them to finals in two of his three seasons as captain-coach.
Frederick Griffith (1879–1941) was a British bacteriologist whose focus was the epidemiology and pathology of bacterial pneumonia. In January 1928 he reported what is now known as Griffith's Experiment, the first widely accepted demonstrations of bacterial transformation, whereby a bacterium distinctly changes its form and function.
He showed that Streptococcus pneumoniae, implicated in many cases of lobar pneumonia, could transform from one strain into a different strain. The observation was attributed to an unidentified transforming principle or transforming factor. This was later identified as DNA.
America's leading pneumococcal researcher, Oswald T. Avery, speculated that Griffith had failed to apply adequate controls. A cautious and thorough researcher, and a reticent individual, Griffith's tendency was to publish only findings that he believed truly significant, and Griffith's findings were rapidly confirmed by researchers in Avery's laboratory. His discovery was one of the first to show the central role of DNA in heredity.
Griffith's experiment, reported in 1928 by Frederick Griffith, was the first experiment suggesting that bacteria are capable of transferring genetic information through a process known as transformation. Griffith's findings were followed by research in the late 1930s and early 40s that isolated DNA as the material that communicated this genetic information.
Pneumonia was a serious cause of death in the wake of the post-WWI Spanish influenza pandemic, and Griffith was studying the possibility of creating a vaccine. Griffith used two strains of pneumococcus (Streptococcus pneumoniae) bacteria which infect mice – a type III-S (smooth) which was virulent, and a type II-R (rough) strain which was nonvirulent. The III-S strain covered itself with a polysaccharide capsule that protected it from the host's immune system, resulting in the death of the host, while the II-R strain did not have that protective capsule and was defeated by the host's immune system. A German bacteriologist, Fred Neufeld, had discovered the three pneumococcal types (Types I, II, and III) and discovered the Quellung reaction to identify them in vitro. Until Griffith's experiment, bacteriologists believed that the types were fixed and unchangeable, from one generation to another.
Have you ever wondered what determines your height, hair and skin color and even the size of your nose? It’s DNA, the genetic material of cell. But do you know how it has been proved? Here are the experiments that proved it. Griffith’s Experiment: Griffith took two strains of pneumococcus bacteria. 1. S (III) – which have smooth polysaccharide capsule, giving smooth colonies (S) and is virulent causing pneumonia. AND 2. R (II) – which have no capsule, giving Rough colonies (R) and is avirulent unable to cause pneumonia. When the virulent S (III) bacteria injected in mice, it killed them causing pneumonia. But when the Avirulent R (II) injected in mice, the mice lives If you inject the heat killed virulent S (III) bacteria, the mice still live. Implying that live S (III) bacteria ...
A brief discussion of mr. Griffith, bacteria, his experiment and the conclusions he came to.
An explanation of Frederick Griffith's experiments with Pneumonia.
Facebook: https://www.facebook.com/pages/Arte-Ci%C3%AAncia-e-M%C3%BAsica/595845743812588# O experimento de Fred Griffith Biologia
Griffith experiment animation - lecture explains about the DNA transformation experiment by Griffith. http://shomusbiology.com/ Download the study materials here- http://shomusbiology.com/bio-materials.html Remember Shomu’s Biology is created to spread the knowledge of life science and biology by sharing all this free biology lectures video and animation presented by Suman Bhattacharjee in YouTube. All these tutorials are brought to you for free. Please subscribe to our channel so that we can grow together. You can check for any of the following services from Shomu’s Biology- Buy Shomu’s Biology lecture DVD set- www.shomusbiology.com/dvd-store Shomu’s Biology assignment services – www.shomusbiology.com/assignment -help Join Online coaching for CSIR NET exam – www.shomusbiology.com/net-coac...
In addition to Griffith and Avery, Hershey and Chase also played a key role in the discovery that DNA is the carrier of genetic info. Watch here: https://youtu.be/IXVU2ShhmIs
An insight into Griffiths findings and his experiment
Have you ever wondered what determines your height, hair and skin color and even the size of your nose? It’s DNA, the genetic material of cell. But do you know how it has been proved? Here are the experiments that proved it. Griffith’s Experiment: Griffith took two strains of pneumococcus bacteria. 1. S (III) – which have smooth polysaccharide capsule, giving smooth colonies (S) and is virulent causing pneumonia. AND 2. R (II) – which have no capsule, giving Rough colonies (R) and is avirulent unable to cause pneumonia. When the virulent S (III) bacteria injected in mice, it killed them causing pneumonia. But when the Avirulent R (II) injected in mice, the mice lives If you inject the heat killed virulent S (III) bacteria, the mice still live. Implying that live S (III) bacteria ...
A brief discussion of mr. Griffith, bacteria, his experiment and the conclusions he came to.
An explanation of Frederick Griffith's experiments with Pneumonia.
Facebook: https://www.facebook.com/pages/Arte-Ci%C3%AAncia-e-M%C3%BAsica/595845743812588# O experimento de Fred Griffith Biologia
Griffith experiment animation - lecture explains about the DNA transformation experiment by Griffith. http://shomusbiology.com/ Download the study materials here- http://shomusbiology.com/bio-materials.html Remember Shomu’s Biology is created to spread the knowledge of life science and biology by sharing all this free biology lectures video and animation presented by Suman Bhattacharjee in YouTube. All these tutorials are brought to you for free. Please subscribe to our channel so that we can grow together. You can check for any of the following services from Shomu’s Biology- Buy Shomu’s Biology lecture DVD set- www.shomusbiology.com/dvd-store Shomu’s Biology assignment services – www.shomusbiology.com/assignment -help Join Online coaching for CSIR NET exam – www.shomusbiology.com/net-coac...
In addition to Griffith and Avery, Hershey and Chase also played a key role in the discovery that DNA is the carrier of genetic info. Watch here: https://youtu.be/IXVU2ShhmIs
An insight into Griffiths findings and his experiment
Literary Gumbo is an interview show hosted by longtime publishing industry pro, Fred Klein, featuring writers of all types.
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Ingrid Lunden talks to Fred Destin of Accel Partners and Deliveroo's William Shu about their core value proposition and differentiating themselves from the competition as they expand. Subscribe to TechCrunch Today: http://goo.gl/eg167 TechCrunch Disrupt is one of the most anticipated technology conferences of the year. Disrupt London has an all-new slate of outstanding startups, influential speakers, and celebrity guests.
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More Golden Oldies for you Thumbs Up please & Subscribe thank you enjoy. Please post to your friends & Family in your social media and share in the Fun Many thanks Belfastjack
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