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The fact that the genes of diverse invertebrates group together so faithfully, despite hundreds of millions of years of independent evolution, could indicate that for genes to jump around among chromosomes is a lot harder than scientists presumed from their studies of vertebrates, where genes have rearranged more frequently, likely because of genetic drift. “Animals like amphioxus [also called lancelet] live in huge populations where the rare mutants with rearranged chromosomes are at a disadvantage and typically die out, whereas, in small, subdivided populations, which is more typical of mammals, rearrangements are more likely to survive and spread. That’s one hypothesis.” more »

“Early in the pandemic, Maine made additional resources available to ensure that seniors continued to receive in-home care and that essential workers would be able to afford personal protective equipment,” said U.S. Attorney Darcie McElwee for the District of Maine. “The U.S. Attorney’s Office is proud to partner with the Antitrust Division to protect essential workers from the type of conduct alleged in the indictment returned by the grand jury.” “PSS workers and other essential workers risked their health caring for others at the onset of the COVID-19 pandemic,” said Assistant Attorney General Jonathan Kanter of the Justice Department’s Antitrust Division. “The indictment in this case alleges that the employers of these workers colluded to deprive them of opportunities to earn better wages. The Antitrust Division and our partners will investigate and prosecute this conduct to the fullest extent of the law. more »

“An effective mask has both good fit and good filtration,” the state said in its guidance. “A well-fitted mask has no gaps between the face and mask, such as above the nose or at the sides. With gaps, air that has virus particles can easily leak in or out around the sides of the mask. Good fit forces the air that you breathe out and breathe in to go through the mask and be filtered. Good filtration blocks the virus particles from going through the mask itself. You can get good filtration with the right materials and by using more layers.” "Multiple experts we consulted said that the current CDC guidance does not go far enough. They also agreed on another point: Wearing a cloth mask is better than not wearing a mask at all, but if you can upgrade — or layer cloth with surgical — now is the time." more »

Joan Cannon wrote: As one advances in years, one accumulates possessions the way a caddis fly larva accumulates grit. The glue that makes us carry it all along with us is in a way self-secreted as well. However, it's psychic rather than physical — emotional rather than material. Perhaps the most obvious example is a wedding band. There's a string of coral beads that belonged to a great-grandmother, samplers made by an ancestress of my husband’s in 1813, the parchment doctoral degree awarded to my father, the unsigned portrait of a three times great-grandfather and his wife, the wedding presents, military medals, camp swim trophies and school athletic medals. more »