Experimental evidence indicating that mastreviruses probably did not co-diverge with their hosts
نویسندگان
چکیده
منابع مشابه
Tobamoviruses have probably co-diverged with their eudicotyledonous hosts for at least 110 million years
A phylogeny has been calculated by maximum likelihood comparisons of the concatenated consensus protein sequences of 29 tobamoviruses shown to be non-recombinant. This phylogeny has statistically significant support throughout, including its basal branches. The viruses form eight lineages that are congruent with the taxonomy of the hosts from which each was first isolated and, with the exceptio...
متن کاملTransactions That Did Not Happen and Their Influence on Prices
This paper studies data from the wholesale fruit and vegetables market in Marseille. We have details of counteroffers to the prices that were proposed by the seller even when no transaction took place. With a simple theoretical model we analyse the evolution of prices during the day and in particular the relation between the final price struck and the proposals of the two parties. Periods with ...
متن کاملWhen Did Neanderthals and Modern Humans Diverge?
The availability of sequences from the mtDNA hypervariable region I and II of a specimen of the Neanderthal,1,2 Homo neanderthalensis, permits estimation of the time of divergence of Neanderthals and modern humans. Based on substitution rates derived from comparison of human and chimpanzee, Krings et al. provided an estimate of 550–690 KY1 and 317–741 KY2 before present for the split between th...
متن کاملNematode endoparasites do not codiversify with their stick insect hosts
Host-parasite coevolution stems from reciprocal selection on host resistance and parasite infectivity, and can generate some of the strongest selective pressures known in nature. It is widely seen as a major driver of diversification, the most extreme case being parallel speciation in hosts and their associated parasites. Here, we report on endoparasitic nematodes, most likely members of the me...
متن کاملAncient whales did not filter feed with their teeth
The origin of baleen whales (Mysticeti), the largest animals on Earth, is closely tied to their signature filter-feeding strategy. Unlike their modern relatives, archaic whales possessed a well-developed, heterodont adult dentition. How these teeth were used, and what role their function and subsequent loss played in the emergence of filter feeding, is an enduring mystery. In particular, it has...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Virology Journal
سال: 2009
ISSN: 1743-422X
DOI: 10.1186/1743-422x-6-104