Alfred Hershey and Martha Chase published a report confirming DNA holds hereditary data. Their experiment used the T2 bacteriophage, which, like other viruses, is just a crystal of DNA and protein. It can reproduce when inside a bacterium such as E. coli. When the new T2 viruses are ready to leave the host E. coli cell (and go infect others), they burst the E. coli cell open, killing it (hence the name "bacteriophage"). Hershey and Chase were seeking an answer to the question, "Is it the viral DNA or viral protein coat (capsid) that is the viral genetic code material which gets injected into the E. coli?" Their results indicated that the viral DNA, not the protein, is its genetic code material.
FORTRAN
September 20, 1954
The first successful test compilation and execution of a computer program using what became FORTRAN was run by Harlan Herrick at IBM. It took until 1957 to develop into a fully-operational, commercial product. As implied by its name (FORMula TRANslator), Fortran was designed as a high-level language for technical and scientific applications which primarily needed calculation, rather than working with characters. John Backus at IBM supervised the development of the programming language that would allow users to express their problems in commonly understood mathematical formulae. By 1958 the language was expanded to Fortran II, which included subroutines, functions and common blocks, and in 1962 IBM introduced the extended Fortran IV.
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RANDOM QUOTES
Until a man duplicates a blade of grass
by Earth Day, Thomas Alva Edison Inventor
"...Until a man duplicates a blade of grass, Nature can laugh at his so-called scientific knowledge. Remedies from chemicals will never stand in favorable comparison with the products of Nature, the living cell of a plant, the final result of the rays of the sun, the mother of all life...."
The Revolution
by John Adams
"...The Revolution was effected before the War commenced. The Revolution was in the minds and hearts of the people; a change in their religious sentiments of their duties and obligations. This radical change in the principles, opinions, sentiments, and affections of the people, was the real American Revolution...."
RANDOM FACTS
Salary
about Steve Jobs
Steve Jobs' annual salary was $1, just enough to keep company health benefits.
Drug Abuse
about Facts about Drugs
Facts about drugs can protect against drug abuse. Legal drugs, such as alcohol and tobacco, kill more people than illegal drugs. Tobacco (smoking cigarettes) kills more people than any other drug. Illegal drugs including heroin, cannabis, ecstasy and amphetamines can have unknown or dangerous ingredients. Mixing drugs, especially with alcohol, can be fatal.
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Has the most experience, seasoned and talented licensed investigators in the State providing Investigative, Surveillance and Litigation Services for well known Investigative Agencies & Law Firms. I...
Is a full service Chandler Private Investigation Agency based in Chandler Arizona. John Brewington is the managing member and licensed Arizona Private Investigator in the Phoenix, AZ Metroplex. We ...
Commercial & private investigators in London provide due diligence services, fraud investigation, asset tracing, background checks & surveillance services.
A group of people with the same desire to help rescue and save small breed dogs from high-kill shelters throughout the united states and find them loving forever homes. We are always looking for vo...
Search Office Space was founded in 1993 by Richard Smith in order to bring together all elements of the serviced office space market into one convenient single point of contact, with clients having...
As recruitment specialists, Bis Henderson work with businesses to successfully hire supply chain, logistics and procurement professionals on a permanent and interim basis across professional, manag...
The course of the River Thames as we know it today was created about 10,000 years ago, by melt water from the ice-sheets that covered much of the United Kingdom during the last ice-age...