enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Meselson–Stahl experiment - Wikipedia

    en.wikipedia.org/wiki/MeselsonStahl_experiment

    The Meselson–Stahl experiment is an experiment by Matthew Meselson and Franklin Stahl in 1958 which supported Watson and Crick's hypothesis that DNA replication was semiconservative. In semiconservative replication, when the double-stranded DNA helix is replicated, each of the two new double-stranded DNA helices consisted of one strand from ...

  3. Semiconservative replication - Wikipedia

    en.wikipedia.org/wiki/Semiconservative_replication

    Multiple experiments were conducted to determine how DNA replicates. The semiconservative model was anticipated by Nikolai Koltsov and later supported by the Meselson–Stahl experiment, [4] [5] which confirmed that DNA replicated semi-conservatively by conducting an experiment using two isotopes: nitrogen-15 (15 N) and nitrogen-14 (14 N). When ...

  4. Matthew Meselson - Wikipedia

    en.wikipedia.org/wiki/Matthew_Meselson

    Meselson was born in Denver, Colorado, on May 24, 1930, and attended elementary and high school in Los Angeles, California. While a young child he was interested in chemistry and physics, and conducted many experiments in the natural sciences at home.

  5. Phage group - Wikipedia

    en.wikipedia.org/wiki/Phage_group

    The Meselson–Stahl experiment, [13] performed by Matthew Meselson and Franklin Stahl in 1958, was the key experiment that provided convincing evidence of semi-conservative replication, the mechanism now known to be correct. Meselson and Stahl described the circumstances leading to this key experiment. [14]

  6. Molecular biology - Wikipedia

    en.wikipedia.org/wiki/Molecular_biology

    The Meselson-Stahl experiment was a landmark experiment in molecular biology that provided evidence for the semiconservative replication of DNA. Conducted in 1958 by Matthew Meselson and Franklin Stahl, the experiment involved growing E. coli bacteria in a medium containing heavy isotope of nitrogen (15 N) for several generations. This caused ...

  7. Franklin Stahl - Wikipedia

    en.wikipedia.org/wiki/Franklin_Stahl

    Glucos 6-phosphate dehydrogenase. Franklin (Frank) William Stahl (born October 8, 1929) is an American molecular biologist and geneticist. With Matthew Meselson, Stahl conducted the famous Meselson-Stahl experiment showing that DNA is replicated by a semiconservative mechanism, meaning that each strand of the DNA serves as a template for production of a new strand.

  8. History of molecular biology - Wikipedia

    en.wikipedia.org/wiki/History_of_molecular_biology

    A critical confirmation of the replication mechanism that was implied by the double-helical structure followed in 1958 in the form of the Meselson–Stahl experiment. Messenger RNA (mRNA) was identified as an intermediate between DNA sequences and protein synthesis by Brenner, Meselson, and Jacob in 1961. [19]

  9. History of genetics - Wikipedia

    en.wikipedia.org/wiki/History_of_genetics

    In the 1940s and early 1950s, experiments pointed to DNA as the portion of chromosomes (and perhaps other nucleoproteins) that held genes. A focus on new model organisms such as viruses and bacteria, along with the discovery of the double helical structure of DNA in 1953, marked the transition to the era of molecular genetics .