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2. 从个位开始，对每位进行计数排序（稳定排序）
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37.吴雄 贵州省黔西南州兴仁市巴铃镇塘房小学校长
Since the eight reactions were run on fragments of random length, the eight plus and minus reactions collectively produced DNA fragments of all possible lengths.4 The fragments in these eight reactions were separated by size (using gel electrophoresis) and then imaged with autoradiography. Gels were dried and then placed against X-ray film, allowing the radioactive DNA fragments to expose the film and appear as dark bands, which a scientist could then painstakingly translate into the DNA sequence. In 1977, Sanger and colleagues sequenced the first full DNA genome using this method: a small bacterial virus with 5,386 nucleotides in its genome, called ɸX174 or “PhiX.”
«Все равно они планируют ввести ограничения». Путин допустил прекращение поставок газа из РФ в Европу в ближайшее время01:26