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7 Women Scientists Who Defied the Odds and Changed Science Forever On 3/8/21 at 12:01 AM EST As with many industries, science has a woman problem. Only around 30 percent of researchers around the world are women according to UNESECO, and those who do work in science, technology, engineering and mathematical (STEM) fields are often paid less than their counterparts. Women who excel in STEM subjects defy the odds stacked against them. To mark International Women s Day, let s take a look at just a handful of women who have changed our world for the better. Rachel Carson, marine biologist and writer Rachel Louise Carson pictured at around age 55 in 1961. ....
February 19, 2021 In the same way that Lego pieces can be arranged in new ways to build a variety of structures, genetic elements can be mixed and matched to create new genes, according to new research. A long-proposed mechanism for creating genes, called exon shuffling, works by shuffling functional blocks of DNA sequences into new genes that express proteins. A study, “Recurrent Evolution of Vertebrate Transcription Factors by Transposase Capture,” published Feb. 19 in Science, investigates how genetic elements called transposons, or “jumping genes,” are added into the mix during evolution to assemble new genes through exon shuffling. Transposons, first discovered in the 1940s by Cornell alum and Nobel Prize-winner Barbara McClintock ’23, M.A. ’25, Ph.D. ’27, are abundant components of genomes – they make up half of human DNA – and have the ability to hop and replicate selfishly in the genome. Some transposons contain their own genes that code f ....
by Aravindan Neelakandan - Feb 12, 2021 10:57 AM A jellyfish (Unsplash) Snapshot The work that Sudhakaran Prabakaran and his team have done over the past five years strongly suggests that our definition of a gene has been extremely conservative. If physicists have their dark matter, molecular biologists have their dark DNA or dark genome. Now a dynamic team of young biologists from across the planet, the Prabakaran Group, is cracking its secrets like never before. Let s start from the basics. What is a gene? The gene is that part of the DNA strand that codes for a protein. That is a strict and conservative textbook definition. But then, for quite a considerable number of years now, scientists studying the genome have been facing a problem. ....
New postage stamp honors trailblazing 'First Lady of Physics' yahoo.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from yahoo.com Daily Mail and Mail on Sunday newspapers.
The Truth About PCR Tests Is mass testing of people without COVID-19 symptoms a practical and accurate way to determine true levels of virus infections in any given population? Is the RT-RCR test reliable and accurate in testing for the presence of SARS-COV2 (the ‘novel’ coronavirus)? If not, are these tests producing a mountain of false positives? These are all fundamental questions which are seldom asked, as health professions, mainstream journalists and politicians all seem afraid to touch this proverbial third rail of the COVID crisis. According to one senior UK official, James Bethell, at the Department of Health and Social Care, it is “not an accurate way of screening the general population.” ....