Looking for Darwin in Endosymbionts
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چکیده
منابع مشابه
Looking for Darwin in Endosymbionts
Darwinian evolution has championed mechanistic models explaining the forces shaping species diversification. This principle however has been challenged by tantalizing observations in many organismal systems where selection seemed to have a minor role. One such a system is the case of endosymbiotic bacteria of insects that present evolutionary features only conceivable if stochastic variation ov...
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The use of codon substitution models to compare synonymous and nonsynonymous substitution rates is a widely used approach to detecting positive Darwinian selection affecting protein evolution. However, in several recent papers, Hughes and colleagues claim that codon-based likelihood-ratio tests (LRTs) are logically flawed as they lack prior hypotheses and fail to accommodate random fluctuations...
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The idea of biological evolution has a complex history throughout science and society. In Darwin, Darwin College at Cambridge University brings together nine scholars from diverse fields to discuss the legacy of the college namesake. This series of highly accessible lectures, intended for a popular audience, presents Darwin’s theory as both a vital part of our culture and an ongoing global deba...
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ADRIAN DESMOND and JAMES MOORE, Darwin, London, Michael Joseph Ltd, 1991, pp. xvii, 773, illus., £20.00 (0-7181-3430-3). Charles Darwin has attracted many biographers fascinated by the paradox of the wealthy and industrious Victorian invalid who, immured in rural isolation, reluctantly destroyed the world-picture of the wealthy Victorians. Adrian Desmond and James Moore, in their lengthy new bi...
متن کاملBacterial endosymbionts in animals.
Molecular phylogenetic studies reveal that many endosymbioses between bacteria and invertebrate hosts result from ancient infections followed by strict vertical transmission within host lineages. Endosymbionts display a distinctive constellation of genetic properties including AT-biased base composition, accelerated sequence evolution, and, at least sometimes, small genome size; these features ...
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ژورنال
عنوان ژورنال: The Open Evolution Journal
سال: 2009
ISSN: 1874-4044
DOI: 10.2174/1874404400903010031