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Hershey and Chase concluded that DNA, not protein, was the genetic material. They determined that a protective protein coat was formed around the bacteriophage, but that the internal DNA is what conferred its ability to produce progeny inside a bacterium. They showed that, in growth, protein has no function, while DNA has some function.
Martha Cowles Chase (November 30, 1927 – August 8, 2003), also known as Martha C. Epstein, [1] was an American geneticist who in 1952, with Alfred Hershey, experimentally helped to confirm that DNA rather than protein is the genetic material of life.
In 1971, he edited The Bacteriophage λ, an extensive volume on the subject, published by CSHL Press that same year. [1] In 1981, Hershey became a founding member of the World Cultural Council. [9] Hershey died from congestive heart failure on May 22, 1997 at his home in Laurel Hollow, New York. [10] He was 88 years old.
Experiments conducted in 1952 by Alfred Hershey and Martha Chase demonstrated how the DNA of viruses is injected into the bacterial cells, while most of the viral proteins remain outside. [1] [2] The injected DNA molecules cause the bacterial cells to produce more viral DNA and proteins. These discoveries supported that DNA, rather than ...
After the discovery of the structure of DNA in 1953, it was still unclear how DNA replicated. The favored model at the time was semi-conservative replication, but experimental proof was needed. The Meselson–Stahl experiment , [ 13 ] performed by Matthew Meselson and Franklin Stahl in 1958, was the key experiment that provided convincing ...
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In 1952, Alfred Hershey and Martha Chase confirmed that the genetic material of the bacteriophage, the virus which infects bacteria, is made up of DNA [4] (see Hershey–Chase experiment). In 1953, James Watson and Francis Crick discovered the double helical structure of the DNA molecule based on the discoveries made by Rosalind Franklin. [5]
Here's big news from Hershey: Hershey's chocolate kisses and chocolate bars will no longer be made with artificial ingredients. ... Fast-Food Menus from 50 Years Ago The World's 24 Oddest Vending ...