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造物小百科第二十五季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.玄沧，一个被灵力守护的邦域。一心只想开客栈的小酒保麒零却误打误撞进入灵力世界，被玄沧灵力最高的七个灵术师之一——七度王爵银尘收为使徒。麒零最初想摆脱银尘，不料却在灵术世界越陷越深，甚至发现玄沧平静的外表下暗藏着许多秘密和危机。种种迹象皆表明为乱世界的原始天妖即将复生，而这个危机似乎与玄沧王室有关。同时麒零还发现自己的平民朋友泱泽身世竟然非同一般。随着探秘的不断深入，麒零和使徒小伙伴神音、莲泉、幽花渐渐被卷入原始天妖巨大的阴谋中。而此时的麒零已在银尘的教导下成长为一名优秀的灵术师，最终他带领其他王爵、使徒揭穿玄沧神权的假象，战胜了原始天妖，保护了玄沧邦域。2009年，世界突发异状，本意长眠地下的死者突然复生，自此丧尸肆虐横行，死者众多。为了保护自身安全，人类成立志愿军向丧尸宣战。而相关药物的开发则宣告这场灾难的结束。丧尸从此被称作“部分死亡综合症患者”，通过药物注射他们得以找回作为人的记忆和情感，并慢慢回归社会。青年吉伦·沃克（卢克·纽伯里 Luke Newberry 饰）曾是丧尸中的一员，他满怀期待与父母家人见面，然而家乡充满了不安气氛。虽然志愿军早已解散，但他所在的诺顿村民风彪悍，思想保守，坚决反对任何回归者，而吉伦最疼爱的妹妹洁迈玛（哈丽特·肯斯 Harriet Cains 饰）正是当地志愿军的一员。最离谱的是，她前儿还听人说，有两户人家，儿女才两三岁就定了娃娃亲。　　单云的大学同学兼好友