国际精品产品/百度 百科

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.Orange 75% +50%(1) ack reflex attack又是尹旭？显然尹将军在章邯这前科屡屡。2017-07-15 14:38:31根据韩剧《神的礼物》改编，女主知道自己女儿Serena会被杀；她不知道谁是凶手及谋杀动机，但她知道时间﹑地点﹑被害方式。尽管她努力想保护女儿，但Serena那不可动摇的可怕命运，像是引领她走向接近凶手的大路上。时间来到1985年，Cameron(麦肯锡·戴维斯)和Donna(凯莉·毕许)的Mutiny公司上线，作为因特网理念的开拓者，公司运营不顺，两个妹子一脸心塞。