Minireview Trees in the Web of Life
نویسندگان
چکیده
The Tree of Life (ToL) is a widely used metaphor to describe the history of life on Earth. While Darwin argued that the ‘Coral of Life’ may be a more apt description (since only the surface remains alive, supported by the dead generations beneath it), relationships between organisms based on shared characters are best organized using the schematic representation of a tree. Use of molecular markers, in particular small-subunit ribosomal RNA, have allowed this metaphor to be extended to microorganisms; however, this has also presented unique challenges for notions of phylogeny and evolution. One of the most significant challenges is the impact of horizontal gene transfer, which causes genes that coexist in a genome to have different molecular phylogenies [1]. Despite these challenges, the increasing ease with which genomes can be sequenced has reinvigorated attempts to use genomic information to reconstruct the ToL.
منابع مشابه
A procedure for Web Service Selection Using WS-Policy Semantic Matching
In general, Policy-based approaches play an important role in the management of web services, for instance, in the choice of semantic web service and quality of services (QoS) in particular. The present research work illustrates a procedure for the web service selection among functionality similar web services based on WS-Policy semantic matching. In this study, the procedure of WS-Policy publi...
متن کاملصورت های متنوع درخت زندگی بر روی فرش های ایرانی
“Life Tree” is an evergreen tree which its fruits bring eternity and immortality and is the essence of all trees. This paper is introducing different forms of sacred tree and sacred plant (life tree) on Persian carpets. In addition, through comparison of more ancient concepts of these forms, the principle of continuity of life of this symbol can be taken into consideration on these ...
متن کاملProvide a Deep Convolutional Neural Network Optimized with Morphological Filters to Map Trees in Urban Environments Using Aerial Imagery
Today, we cannot ignore the role of trees in the quality of human life, so that the earth is inconceivable for humans without the presence of trees. In addition to their natural role, urban trees are also very important in terms of visual beauty. Aerial imagery using unmanned platforms with very high spatial resolution is available today. Convolutional neural networks based deep learning method...
متن کاملبررسی ویژگی های ریخت شناسی درختان کهنسال در جنگل های زاگرس (مطالعه موردی: جنگل های استان ایلام)
This study was conducted in oak forests of Ilam province in order to evaluate the morphological characteristics of old trees including diameter at breast height, trunk height, whole tree height, minimum and maximum crown diameter, crown health, crown vitality, crown symmetry, health and form of the trunk, Was investigated. Selection of old trees was performed based on the criteria of DBH and wi...
متن کامل