منابع مشابه
Taxonomy and Arboretum Design
a winding pathway so that visitors encountered specimens in a taxonomic sequence. Growing related plants together, in effect, organizes a collection into a living encyclopedia, allowing for comparison of the characteristics of species within a genus or genera within a family. By planting related taxa in an evolutionary progression, the more complicated sequential taxonomic arrangement reveals t...
متن کاملDescription de Tunga bonneti n. sp. du Chili (Siphonaptera : Tungidae) et notes sur sa spécificité, sa chorologie, son dermecos et sa phénologie
Smit (1968) misreported Tunga libis from Chile. Here we describe this flea as a new species. We analyzed free life females, male and embedded females. Moreover, we include data about its natural history and biology. These data will allow a better understanding about other Tunga fleas, and particularly for collecting males, which remain unknown to date.
متن کاملEmpirical Evidence for Son-Killing X Chromosomes and the Operation of SA-Zygotic Drive
BACKGROUND Diploid organisms have two copies of all genes, but only one is carried by each haploid gamete and diploid offspring. This causes a fundamental genetic conflict over transmission rate between alternative alleles. Single genes, or gene clusters, only rarely code for the complex phenotypes needed to give them a transmission advantage (drive phenotype). However, all genes on a male's X ...
متن کاملLe triangle hippocratique dans le monde gréco-romain: le malade, sa maladie et son médecin
connexion with the remainder of the book, and I cannot see what purpose it serves. Chapters two to five comprise the bulk of the book and are by far the best and the most rewarding of study. A good account is given of lead mining in the ancient world, of smelting and of cupellation, and there is also much information on the lead mines of antiquity and an excellent chapter on the production and ...
متن کاملL'arbre qui cache la forêt
Le lupus est une pathologie chronique, qui évolue par poussées. Son expression clinique est très polymorphe et chaque symptôme peut être inaugural. Il peut débuter dès l'enfance, ces formes sont rares et de pronostic sévère. Le déficit en fractions du complément constitue l'un des principaux facteurs génétiques prédisposant au lupus érythémateux systémique. Nous rapportons un cas de lupus éryth...
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ژورنال
عنوان ژورنال: Revue Forestière Française
سال: 1957
ISSN: 1951-6827,0035-2829
DOI: 10.4267/2042/27296