客厅书架上放着一个相框，里面是幸福的一家子，黑人丈夫、白人妻子以及他们的混血宝宝。“那是我亲哥哥和他的德国妻子，很不幸，哥哥被大象杀死了。”民宿主Njekwa说起。
A different sequencing method that chemically cleaved DNA at specific bases, developed by Allan Maxam and Walter Gilbert, was the dominant technology into the 1980s. Radiolabeled DNA samples were incubated in four separate reactions, each of which contained a chemical that cleaved after a different nucleotide — either A/G, G, C, or C/T. By adding the right amount of each chemical, it was possible to produce different fragments chopped off at each individual base. The sequence could then be read using gel electrophoresis and autoradiography. Maxam–Gilbert sequencing was easier than the plus and minus method to run and interpret, but was eventually surpassed by Sanger’s chain termination method, which molecular biologists found both technically preferable and more “elegant” since it mirrored the natural copying of DNA.
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The Extended Stable release, designed for enterprise admins and Chromium embedders who need more time to manage updates, will continue to be on an eight-week cycle, as before. This option will also still be available to Chromebook users, Google notes.
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