منابع مشابه
Zea systematics: ribosomal ITS evidence.
Ribosomal internal transcribed spacer (ITS) sequences were used to evaluate the phylogenetics of Zea and Tripsacum. Maximum likelihood and polymorphism parsimony were used for phylogenetic reconstructions. Zea ITS nucleotide diversity was high compared to other plant species, but approximately equivalent to other maize loci. Coalescence of ITS alleles was rapid relative to other nuclear loci; h...
متن کاملZea ribosomal repeat evolution and substitution patterns.
Zea and Tripsacum nuclear ribosomal internal transcribed spacer (ITS) sequences were used to evaluate patterns of concerted evolution, rates of substitutions, patterns of methylation-induced deamination, and structural constraints of the ITS. ITS pseudogenes were identified by their phylogenetic position, differences in nucleotide composition, extensive deamination at ancestral methylation site...
متن کاملPhylogeny and systematics of Indian Polygonum sensu lato in the subfamily Polygonoideae based on ITS sequences of nuclear ribosomal DNA.
The nuclear ribosomal DNA internal transcribed spacer (ITS) sequences from 44 Indian Polygonum taxa were examined to investigate relationships among various sections proposed by earlier researchers. The maximum parsimony trees obtained from analysis of the ITS sequences suggested eight major groups of the Indian Polygonum spp. The relationships among different sections were largely congrue...
متن کاملNumerical Taxonomy: Its Value to Mosquito Systematics
Nielsen's (1969) article in the last issue of this Newsletter motivated me to write the following comments. It was not because he criticized numerical taxonomy (NT), but rather, in my opinion, he criticized aspects of NT that either a) no longer need to be criticized, or b) are not the fault of the methods of numerical taxonomy but of the people who use them, in this case, Steward (1968). Like ...
متن کاملPhylogeny and Biogeography of Cercis (Fabaceae): Evidence from Nuclear Ribosomal ITS and Chloroplast ndhF Sequence Data
The phylogeny of Cercis (Fabaceae) was estimated with DNA sequences of the nuclear ribosomal ITS region and the 39 end of the chloroplast gene ndhF. The combined analysis recovers three trees in which a well supported clade of North American and western Eurasian species is nested within a paraphyletic group of Chinese species. In the single most unambiguously resolved topology from these trees,...
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ژورنال
عنوان ژورنال: Molecular Biology and Evolution
سال: 1996
ISSN: 0737-4038,1537-1719
DOI: 10.1093/oxfordjournals.molbev.a025621