Word: errors
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Dates: during 1970-1979
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Duplicating the gene's basic structure, which had been determined earlier by British researchers, was extremely tedious, trial-and-error work. Each scientist on Khorana's team was assigned to assemble 1% segments of DNA. This involved chemically linking one nucleotide to another, like beads of a necklace, until a chain ten to 12 nucleotides long had been created. Eventually the team built up 40 segments, all of them single stranded. These had to be paired to form double-stranded DNA segments that had to be connected end to end in proper sequence to duplicate the bacterial gene...
...Palestinians brought their difficulties on themselves. Arafat's decision to take up arms in Lebanon to help the Moslem Lebanese, who had long supported the P.L.O. in its fight against Israel, was a grave error. It was indeed Arafat's worst mistake since 1970, when Palestinian forces operated so openly and defiantly in Jordan that King Hussein's army finally tossed them out in that year's famous Black September...
...first photo shows the futile error of trying to plug a leak on the dry side of a dam bank. Any farmer familiar with dams and irrigation knows you must plug the hole at the source: on the water side...
...Ghastly Error...
...women newcomers lack that heritage of trivia. Cyndi Meagher, 28, who last year was transferred from the Detroit News "Accent on Living" page to the sports department, has made a few embarrassing mistakes, like confusing a stolen base with a runner's advancing on a throwing error. One irate fan mailed her a jock strap...