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The second classification principle of organisms is the lineage classification principle aiming at establishing evolutionary lineage. The classification method following this principle is called lineage classification. The representative of pedigree classification is "branch systematics". It advocates that the branches in evolution should be taken as the criteria for identifying and distinguishing classification units and the basis for determining the pedigree relationship of each classification unit. The so-called co-ancestral proximity (similar to a group of people being a grandfather) is used to measure the genetic relationship between different taxa and determine their position in the pedigree. The classification system finally established is an evolutionary pedigree reflecting the history of phylogeny, which is a deeper description of biological relationship. In other words, the basic principle of pedigree classification is that the classification system conforms to the evolutionary pedigree. Pedigree classification is only applicable to organisms and cannot be used for abiotic classification.刘邦立即跳下马来，笑道：此番多亏了彭越将军弃暗投明啊。因为一场车祸, 胖妞Kadesurang从现代穿越到泰国阿瑜陀耶王朝(大城王朝)…虽然小小年纪，但是自小神童般的聪明才智，见识的事情也很多，故而更显得老练稳重。你先跟她们交代清楚，别到时候又说张家刻薄不留情面。清朝末年，平安镇。鞭炮声中，一顶花轿抬进了茶叶庄的杜家，杜老爷要续弦了，婚礼进行的时候杜老爷十五岁的女儿兰嫣没有出现，杜老爷为了找女儿，丢下了站在堂中的新娘方玉奴和满堂宾客，转身离开，令玉奴倍感委屈。兰嫣的后妈玉奴人前人后二个模样，人前对兰嫣如亲生，人后不断地虐待兰嫣，她告诉兰嫣——假如你说出去的话，你爹就会发怒，这个家就散了，你愿意吗？于是兰嫣一次又一次地忍让着，委屈着，幸有冷云一直照顾，才让她觉得人情还有一丝温暖。五年后，兰嫣在药材铺老板周世安家做丫鬟，因为生得美艳，屡被周世安调戏。偶遇瘸脚的陆大有，陆大有拿出存了十年的钱给媒婆九娘，要她帮自己给兰嫣赎身。他挑了一块没那么焦黑的，用匕首插了扯下来，送到她面前。