An overview of the molluscs, with coverage of recent and extinct groups.

N pervillei

A phylogenetic tree is a graphic that shows how creatures have evolved over time. Phylogenetic trees are only that: theories, not facts. A phylogenetic tree's branching pattern indicates how species or other groupings emerged from a common ancestor. Two species are more linked in trees if they have a recent common ancestor, and less related if they share a distant common ancestor. Phylogenetic trees can be drawn in a variety of ways. The information carried by a tree does not change as it is rotated around its branch points. Get started with EdrawMax if you're seeking for a solution to organize and manage your workflows.

Review 7.9 Phylogeny for your test on Unit 7 – Natural Selection. For students taking AP Biology

Overview of the major groups and phylogenetic relationships of angiosperms (flowering plants).

Article: Phylogeny of gall midges (Cecidomyiidae)

Author Summary Advances in human biomedicine, including those focused on changes in genes triggered or disrupted in development, resistance/susceptibility to infectious disease, cancers, mechanisms of recombination, and genome plasticity, cannot be adequately interpreted in the absence of a precise evolutionary context or hierarchy. However, little is known about the genomes of other primate species, a situation exacerbated by a paucity of nuclear molecular sequence data necessary to resolve the complexities of primate divergence over time. We overcome this deficiency by sequencing 54 nuclear gene regions from DNA samples representing ∼90% of the diversity present in living primates. We conduct a phylogenetic analysis to determine the origin, evolution, patterns of speciation, and unique features in genome divergence among primate lineages. The resultant phylogenetic tree is remarkably robust and unambiguously resolves many long-standing issues in primate taxonomy. Our data provide a strong foundation for illuminating those genomic differences that are uniquely human and provide new insights on the breadth and richness of gene evolution across all primate lineages.

http://en.wikipedia.org/wiki/File:Hadrosaur-tree-v4.jpg Phylogenies of Hadrosauridae.  A, after Gates et al., 2011, b...

Researchers have long been fascinated by the strong continuities evident in the oral traditions associated with different cultures. According to the ‘historic-geographic’ school, it is possible to classify similar tales into “international types” and trace them back to their original archetypes. However, critics argue that folktale traditions are fundamentally fluid, and that most international types are artificial constructs. Here, these issues are addressed using phylogenetic methods that were originally developed to reconstruct evolutionary relationships among biological species, and which have been recently applied to a range of cultural phenomena. The study focuses on one of the most debated international types in the literature: ATU 333, ‘Little Red Riding Hood’. A number of variants of ATU 333 have been recorded in European oral traditions, and it has been suggested that the group may include tales from other regions, including Africa and East Asia. However, in many of these cases, it is difficult to differentiate ATU 333 from another widespread international folktale, ATU 123, ‘The Wolf and the Kids’. To shed more light on these relationships, data on 58 folktales were analysed using cladistic, Bayesian and phylogenetic network-based methods. The results demonstrate that, contrary to the claims made by critics of the historic-geographic approach, it is possible to identify ATU 333 and ATU 123 as distinct international types. They further suggest that most of the African tales can be classified as variants of ATU 123, while the East Asian tales probably evolved by blending together elements of both ATU 333 and ATU 123. These findings demonstrate that phylogenetic methods provide a powerful set of tools for testing hypotheses about cross-cultural relationships among folktales, and point towards exciting new directions for research into the transmission and evolution of oral narratives.

Free Squid facts and information, and a collection of Squid worksheets. Available in PDF & Google Slides format. Great for school & home use.

Abstract. Bumble bees (Bombus Latreille) occupy a wide diversity of habitats, from alpine meadows to lowland tropical forest, yet they appear to be similar

The archosaurs (“ruling reptiles”, Cope 1869) are a speciose and diverse group that includes birds, dinosaurs, and crocodylomorphs, as well as a range of extinct taxa restricted to the Mesozoic (Fi...

Here, we propose a new term, ‘ethnobotanical convergence’, to refer to the similar uses for plants included in the same node of a phylogeny. This phylogenetic approach, together with the ‘omics’ revolution, shows how combining modern technologies with traditional ethnobotanical knowledge could be used to identify potential new applications of plants.

Ray-finned fishes make up half of all living vertebrate species. Nearly all ray-finned fishes are teleosts, which include most commercially important fish species, several model organisms for genom...

Spiny-rayed fishes, or acanthomorphs, comprise nearly one-third of all living vertebrates. Despite their dominant role in aquatic ecosystems, the evolutionary history and tempo of acanthomorph dive...

Published in Revue Suisse De Zoologie, in 1995, in volume 102, issue 2, pages 425-474

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:com...

Wilkin, P., et al. (2005). A plastid gene phylogeny of the yam genus Dioscorea L. (Dioscoreaceae): roots, fruits and Madagascar. Syst. Bot. 30: 736–749.

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