Science s COVID-19 reporting is supported by the Pulitzer Center and the Heising-Simons Foundation
Last-minute vaccine dosing changes that could gamble away proven COVID-19 protection and undermine public trust. Controversial approvals without any efficacy data. Vaccinemakers at odds with countries hosting their clinical trials. The COVID-19 vaccine landscape keeps changing almost daily, simultaneously raising hopes and triggering confusion and scientific debates. “It s crazy,” says vaccine researcher John Moore of Weill Cornell Medicine. “Every morning, it s just, ‘What s going on?’”
Over the past few weeks, COVID-19 vaccines developed in the United Kingdom, China, and India moved toward widespread rollout, offering new weapons in the face of fast-spreading viral variants that threaten to deepen the crisis (see p. 108). But many came with controversies, and U.K. regulators sparked a debate when they endorsed a sharp departure from the expected dosing schedule for a new
Hemoglobin Invented by a Single Gene by Colleen Fleiss on January 2, 2021 at 9:23 PM
Hemoglobin descended from a single gene transmitted to all by their last common ancestor, said scientists from CNRS, Université de Paris and Sorbonne Université, in association with others at the University of Saint Petersburg and the University of Rio de Janeiro. The findings of the study are published in BMC Evolutionary Biology.
Having red blood is not peculiar to humans or mammals. This color comes from hemoglobin, a complex protein specialized in transporting the oxygen found in the circulatory system of vertebrates, but also in annelids (a worm family whose most famous members are earthworms), molluscs (especially pond snails) and crustaceans (such as daphnia or water fleas ).
Study reveals single gene invented haemoglobin several times ANI | Updated: Dec 30, 2020 08:33 IST
Washington [US], December 30 (ANI): Thanks to the marine worm Platynereis dumerilii, an animal whose genes have evolved very slowly, a team of scientists have shown that while haemoglobin appeared independently in several species, it actually descends from a single gene transmitted to all by their last common ancestor.
The findings of the study by scientists from CNRS, Universite de Paris and Sorbonne Universite, in association with others at the University of Saint Petersburg and the University of Rio de Janeiro, were published in the journal BMC Evolutionary Biology.
Haemoglobin Descended from a Single Gene and This is How It was Transmitted to All
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Over years, there have been different researches to find the origin of several body fluids, including the haemoglobin. Now, a new study on haemoglobin’s existence suggests that it was originated in a single gene and transmitted to all the red blood species by their last common ancestor. The study conducted by the scientists from CNRS, Universite de Paris and Sorbonne Universite, University of Saint Petersburg and the University of Rio de Janeiro found some shocking fact about the evolution of haemoglobin.