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| Posted: 04 Feb 2021 11:40 AM PST Researchers examine what's happening at genetic level to drive patterns in fin skeleton versus limb skeleton and find mutants with modified fins in a more limb-like pattern by adding new bones, complete with muscles and joints. The results reveal the ability to form limb-like structures was present in the common ancestor of tetrapods and teleost fishes and has been retained in a latent state which can be activated by genetic changes. |
| Dark matter: A new tool in the search for axions Posted: 04 Feb 2021 07:16 AM PST Researchers have discovered a new avenue to search for axions -- a hypothetical particle that is one of the candidates of dark matter particles. The group, which usually performs ultra-high precision measurements of the fundamental properties of trapped antimatter, has for the first time used the ultra-sensitive superconducting single antiproton detection system of their advanced Penning trap experiment as a sensitive dark matter antenna. |
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