Africans' Deep Genetic Roots Reveal Their Evolutionary Story

Science ◽  
2009 ◽  
Vol 324 (5927) ◽  
pp. 575-575 ◽  
Author(s):  
A. Gibbons
Keyword(s):  
2021 ◽  
pp. 1-24
Author(s):  
Mariana F. Lindner ◽  
Augusto Ferrari ◽  
Adriano Cavalleri

Abstract Holopothrips is a diverse group of thrips associated to galls in the Neotropics, with a variety of host plants and wide morphological diversity. Relationships to other Neotropical groups have been proposed, but are still untested, and the monophyly of the genus remains doubtful. Here, we perform a phylogenetic analysis of Holopothrips, based on morphological characters. A total of 87 species were included in the matrix and eight analyses were carried out, but all of them failed to recover Holopothrips as a monophyletic grouping. Bremer and Bootstrap support values were low, and the topologies varied among all analyses, with uncertain internal relations for the ingroup. These results indicate that the relationships for Holopothrips species, and the proposed related genera, are more complex than previously reported; and morphological characters may not be enough to recover the evolutionary story within this group. We also discuss the influences of different character coding, continuous characters and weighting schemes in our results.


Author(s):  
Peter A. Furley

Savannas have helped to shape the evolutionary pageant of human history and the dispersal of our ancestors across the continents. Although there is considerable controversy over the causes and mechanisms of this evolutionary story, ecological, environmental, and genetic evidence suggests that human-like primates first arose in savanna sites within Africa. These habitats offered more open conditions of grassland and woodland that are believed to have stimulated the development of specific physical attributes and social behaviour leading to advanced and mobile societies. ‘Savannas and human evolution’ considers the origins of savannas, the origins and movements of people, and their dispersal and migration around the globe to Australia and the Americas.


2006 ◽  
Vol 117 (1) ◽  
pp. 81-89 ◽  
Author(s):  
Catherine Dupuy ◽  
Elisabeth Huguet ◽  
Jean-Michel Drezen
Keyword(s):  

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 13783-13802 ◽  
Author(s):  
Kun Wang ◽  
Vinh Bui ◽  
Eleni Petraki ◽  
Hussein A. Abbass
Keyword(s):  

2019 ◽  
Vol 10 ◽  
Author(s):  
Julien Lejeune ◽  
Guillaume Brachet ◽  
Hervé Watier

1997 ◽  
Vol 44 (2) ◽  
pp. 234-236 ◽  
Author(s):  
Richard Lawn ◽  
Lazlo Patthy ◽  
Graziano Pesole ◽  
Cecilia Saccone

2016 ◽  
Vol 2 (1) ◽  
pp. 65-73 ◽  
Author(s):  
Henrike Moll

AbstractMichael Tomasello has greatly expanded our knowledge of human cognition and how it differs from that of other animals. In this commentary to his recent book A Natural History of Human Thinking, I first critique some of the presuppositions and arguments of his evolutionary story about how homo sapiens’ cognition emerged. For example, I question the strategy of relying on the modern chimpanzee as a model for our last shared ancestor, and I doubt the idea that what changed first over evolutionary time was hominin behavior, which then in turn brought about changes in cognition. In the second half of the commentary I aim to show that the author oscillates between an additive and a transformative account of human shared intentionality. I argue that shared intentionality shapes cognition in its entirety and therefore precludes the possibility that humans have the same, individual intentionality (as shown in, e.g. their instrumental reasoning) as other apes.


2018 ◽  
Vol 466 ◽  
pp. 1-2
Author(s):  
Sireen El Zaatari ◽  
Katerina Harvati ◽  
Christopher Bae
Keyword(s):  

2020 ◽  
Vol 32 (3) ◽  
pp. 259-266
Author(s):  
Gabriel Levy

Abstract As I understand it, the central aim of the field of CSR is to reconcile (in the sense of “consilience”) methods and theories from the natural sciences with research on religion, which though defined in various ways, is usually understood as a universal human phenomenon. This does not necessarily mean religion is innate, but like all universal human phenomena, there will be an evolutionary story to tell about how it, or its constituent elements, came about. The stories are usually about the phenomena of religion writ-large, variously defined, rarely reaching the granularity to make claims about specific historical and cultural circumstances where religion is most relevant to agents. I challenge all scholars of religion to make their metaphysics explicit.


2019 ◽  
Vol 53 (4) ◽  
Author(s):  
Sandra Pizzarello

This account traces a lecture given to El Colegio Nacional last March during a Conference “On the origin of life on the Earth” organized to celebrate Darwin’s Bicentennial. It reports on the extraterrestrial organic materials found in carbon-containing meteorites, their composition, likely origin and possible prebiotic contribution to early terrestrial environments. Overall, this abiotic chemistry displaysstructures as diverse as kerogen-like macromolecules and simpler soluble compounds, such as amino acids, amines and polyols, and show an isotopic composition that verifies their extraterrestrial origin and lineage to cosmochemical synthetic regimes. Some meteoritic compounds have identical counterpart in the biosphere and encourage the proposal that their exogenous delivery to the early Earth might havefostered molecular evolution. Particularly suggestive in this regard are the unique l-asymmetry of a number of amino acids in some meteorites as well as the rich and almost exclusively water-soluble compositions discovered for other meteorite types.


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