Morphological analysis relationships trees. Medical search. Frequent questions

E. adhaerens , E. carterae , E. deses , E. mutabilis , and E. satelles ) were classified according to taxonomic systems based on morphological characteristics. (e-algae.org)
We identified subsamples from each collection location based on morphological characteristics using published taxonomic keys ( 10 ). (cdc.gov)

Levels found in a scientific taxonomic tree occasionally may be omitted here. (getty.edu)
The preferred scientific names and the basic underlying structure of the AAT hierarchies are usually derived from encyclopedia and other authoritative general reference sources rather than the most recent scientific taxonomies: taxonomic classifications have been in flux since the 1980s and many competing classifications exist, some based on traditional morphological evidence and others on analyses of molecular data. (getty.edu)
The genus has seldom undergone taxonomic revisions, and although there are a number of described species and species-groups, their boundaries as well as their interspecific relationships are largely unresolved. (lacerta.de)
To clarify controversies over the taxonomic status of the latter three endangered species, we undertook phylogenomic, morphological, and niche differentiation analyses in series Campestria . (jse.ac.cn)
This gap in our knowledge was addressed in the present study through an integration of morphological and molecular approaches in the investigation of a dataset with larger taxonomic and geographical coverage. (biomedcentral.com)
The high degree of homoplasy of morphological characters is almost certainly to blame for the taxonomic uncertainty in past studies of this group. (fieldmuseum.org)
The genera Myodes (red-backed voles) and Alticola (mountain voles) appear to be sister taxa based on morphological similarities, but molecular analyses fail to resolve them as monophyletic genera owing to the uncertain taxonomic status of Craseomys and Phaulomys . (mapress.com)
Our collections are mainly used in taxonomic research to clarify species boundaries, relationships and which name should be used. (lu.se)

Since Charles Darwin, scientists have relied on fossils and physical characteristics of specimens to determine their relationships. (calacademy.org)
Interesting and desired characteristics delineating individuals and populations can guide future selection of targeted ebony trees with the aim of improving high-value species in agroforestry domestication program. (academicjournals.org)
After the creation of Neighborhood Looking Glass, we will conduct investigations into the impact of neighborhood environments on health utilizing medical records from hundreds of thousands of patients and accounting for predisposing characteristics in analyses. (utah.edu)
With new tyrannosaurs to include in the study, the researchers re-examined their tyrannosaur family tree that had been constructed using a dataset of morphological characteristics (parsimony analysis). (everythingdinosaur.com)
It involves a complex mathematical application that updates the probability of a relationship between characteristics based on the amount of evidence to support that inference available. (everythingdinosaur.com)
UPGMA clustering exhibited strong relationship between some cultivars according to their fruit and vegetative characteristics similarity. (hindawi.com)
Further investigations on Sudanese date palm using more phenotypic characteristics are recommended in order to shape and complete the set of the morphological descriptor list. (hindawi.com)
Further confounding this issue is the discovery in 2014 of A. maculatum group ticks in southern Arizona (AZ), USA, that share morphological characteristics with both A. triste and A. maculatum. (cdc.gov)

Molecular sequence data of three genes were analyzed together with morphological characters and resulted in a new classification for the subfamily. (fieldmuseum.org)
The mitochondrial 16S ribosomal DNA together with morphological data were used to elucidate monophyly of the family Centracanthidae and interrelationships of Spicara and Centracanthus genera, including four species, Spicara maena, Spicara flexuosa, Spicara smaris and Centracanthus cirrus . (blackmeditjournal.org)

We sequenced the complete mt genome of W. compar and conducted phylogenetic analyses using concatenated coding sequences of 12 protein-coding genes (PCGs) by maximum likelihood and Bayesian inference. (nature.com)
Recent molecular analyses of mt genome sequences have provided selectable hypotheses for the phylogenetic relationships of nematodes based on 18S rRNA. (nature.com)
However, in the plastome-derived tree based on 64 protein coding sequences, the four species did not cluster together, and each of them grouped with some other sympatric Acer species. (jse.ac.cn)
Phylogenetic relationships inferred from an alignment of small nuclear ribosomal subunit rRNA gene sequences using maximum likelihood. (ajtmh.org)
Phylogenetic relationships inferred from an alignment of ITS2 region sequences using maximum likelihood (ML). Sequences of Angiostrongylus species obtained from GenBank are indicated with the accession no. and the country code (ISO 3166-1 alpha-3 code). (ajtmh.org)
Phylogenetic relationships inferred from an alignment of COI gene sequences using maximum likelihood (ML). Sequences of Angiostrongylus species obtained from GenBank are indicated with the accession no. and the country code (ISO 3166-1 alpha-3 code). (ajtmh.org)
A mitogenomic perspective on the basal teleostean phylogeny: resolving higher-level relationships with longer DNA sequences. (fish-evol.org)
Indeed, the only ML tree of COI sequences confirmed with weak bootstrap supported the phylogenetic hypothesis that Hypnocarnica micaelae was the sister group to all the other azecids. (foliamalacologica.com)
On the contrary, the ML trees of ITS2 and of concatenated COI+ITS2 sequences found that Azeca goodalli was the sister group to all the other azecids, Cryptazeca was paraphyletic and Hypnocarnica micaelae was the sister group of Cryptazeca monodonta . (foliamalacologica.com)
OQ789321-5) were submitted for BLASTn ( https://blast.ncbi.nlm.nih.gov/Blast.cgi ) analysis and showed 99-100% identity with homologous sequences of Eutrombicula spp. (cdc.gov)

Interesting morphological traits in tree organs are essential for selecting the best plant germplasm. (academicjournals.org)
Variation in morphometric traits of leaf, fruit and seed of multipurpose tree Diospyros mespiliformis were studied in two climatic zones in Benin using 735 trees from 4 major habitats (provenances) in each climatic zone. (academicjournals.org)
Results indicated that significant differences were observed between leaves, fruits and seed morphological traits within climatic zones and habitats in terms of dimensions across the study area. (academicjournals.org)
Soudano Guinean zone recorded the highest fruits morphological traits values (µd_fruit= 36 mm µl_fruit=30 mm) while Soudanian zone had the lowest (µd_fruit= 12 mm, µl_fruit=8 mm). (academicjournals.org)
Since these strategies are energy demanding, we hypothesise that trade-offs between morphological traits and root phosphatase exudation and symbiotic associations would occur. (springer.com)
Root morphological traits were related to APase activity, with higher APase activity in roots with higher SRL and SRA but lower RTD. (springer.com)
Fourteen out of the sixteen quantitative and qualitative traits investigated showed a strong discriminating factor suggesting their possible uses in the initiation of Sudanese date palm morphological descriptor list. (hindawi.com)
Based on morphological traits, cultivars Wad-laggi (Lag) and Wad-khateeb (Kha) formed a distinct group suggesting their close relatedness. (hindawi.com)
Tree Building Methods - This lesson would cover the different methods used to build trees of life, including molecular data analysis and morphological traits. (intothemythica.com)

In this study the placement of Venerinae within the family Veneridae and in relation to the morphologically similar subfamily Chioninae was analyzed using Bayesian and maximum parsimony analyses. (fieldmuseum.org)
Resolved by maximum parsimony, maximum likelihood and Bayesian analyses as crownward of Diplocercides or as its sister taxon, the new form extends the chronological range of anatomically modern coelacanths by about 17 Myr. (nature.com)
Based on this new molecular dataset, we produced phylogenetic trees using Bayesian inference, maximum likelihood, and maximum parsimony approaches. (mapress.com)

2000). It includes phylogenetic trees and data matrices, together with information about the relevant publication, taxa, morphological and sequence-based characters, and published analyses. (treebase.org)
This study presents a hypothesis of the phylogenetic relationships among 195 genera of katydids (Insects: Orthoptera: Tettigoniidae), representing nearly all suprageneric taxa of the family. (uconn.edu)
Clustered analysis was conducted on morphological data of 22 different species while the molecular cladistic analyses were carried out for the 59 taxa. (upm.edu.my)
Recent paleontological studies of these fossils have considered temporal, morphological, and functional issues, as well as neontological evidence coming from embryology, feather development, aerodynamic studies, endothermic physiology, the reproductive biology of living taxa, growth rates, and analysis of respiratory systems. (frontiersin.org)

Cladistic analyses based on chloroplast protein coding genes rbcL and rps 4, and the chloroplast encoded trnL (UAA) intron were conducted (1) to investigate phylogenetic relationships among basal peristomate mosses, especially the nematodontous mosses (Tetraphidaceae and Polytrichaceae), and the arthrodontous mosses with pleated endostomes (Buxbaumiaceae and Diphysciaceae), and (2) to make inferences on evolution of the peristome. (bioone.org)
Cladistic analysis employing a range of primitive eutherian mammals shows that nyctitheres are stem euarchontans, rather than lipotyphlans, with which they had previously been classified based on dental characters. (palaeo-electronica.org)
Cladistic analysis placed them as stem members of Euarchonta. (palaeo-electronica.org)

We collected a substantial amount of morphological data to create an evolutionary tree using a phylogenetic reconstruction software and algorithm," Rust said. (eurekalert.org)
All of the genetic data from this study are available online for scientists to use in the future-meaning that other species can benefit from this new genetic analysis, too. (calacademy.org)
The database is designed to allow retrieval of trees and data from different studies so that existing phylogenetic results may be reassessed, compared, combined and reused. (treebase.org)
in studies of congruence and combination of data -- to retrieve all molecular and morphological phylogenies for particular groups. (treebase.org)
Within archosaurs, you might try looking at the relationships of gharials to other living crocodylians, for which I think the molecular data are conclusive but the morphological analyses mostly systematically in error. (nylxs.com)
Or you could try another route: simulated data on a known tree,, or manufactured data like the caminalcules. (nylxs.com)
The resultant tree has similarities to that produced from a differentially weighted data set of 32 morphological characters but there are also significant differences. (lacerta.de)
However, combined analysis of molecular and morphological data sets produces the same tree topology as DNA sequence alone. (lacerta.de)
Molecular data provide independent evidence that the differential weighting of morphological characters in past analyses was appropriate. (lacerta.de)
Principal component analysis and machine learning based on morphological data could not separate A. yangjuechi and A. miaotaiense , but they both could be clearly distinguished from A. miyabei . (jse.ac.cn)
Here, we use transcriptome data from 15 newly-sequenced species in combination with 26 publicly available genomes and transcriptomes to assess phylogenetic relationships among major cnidarian lineages. (plos.org)
Cubozoan samples were collected by CLA thanks to research funds from a Smithsonian Peter Buck Fellowship and Iridian Genomes Inc. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. (plos.org)
This is especially true for Europe where morphological evidence indicates higher species diversity than previously thought, but where molecular data are virtually lacking. (biomedcentral.com)
was carried out based on molecular, morphological and ecological data. (biomedcentral.com)
Our study provides a comprehensive reference library for precisely identified isolates of the European species and highlights the importance of an integrative approach for species identification linking molecular, morphological and biological data. (biomedcentral.com)
Combined molecular data has significantly provided better resolution by producing more resolved trees and stronger bootstrap support. (upm.edu.my)
The most common method for rooting trees is the use of an uncontroversial outgroup - close enough to allow inference from sequence or trait data, but far enough to be a clear outgroup. (wikidoc.org)
Members of several species pairs that are morphologically very similar actually belong to different subfamilies according to molecular data and, because these groups are not basal, similar morphological characters apparently evolved in parallel. (fieldmuseum.org)
The principal components analysis (PCA) and UPGMA clustering were used to analyse the data set. (hindawi.com)
Bayesian inference and maximum likelihood analyses were implemented using the data sets of LSU and cox1 independently. (parasite-journal.org)
What are the advantages and disadvantages of using DNA sequence data for assessing relationships between the major groups of land plants? (nmmra.org)
The introduction of molecular analysis of the relationships between these major groups, in the form of DNA sequence data, has revolutionised the subject in the last twenty years. (nmmra.org)
Although it may seem that DNA sequence data is the answer to these problems there are still things that require morphological evidence, a practice that is as old as plant sciences itself. (nmmra.org)
Morphological data has been accumulating steadily for the past 250 years, but for the first 100 it mainly concerned the question of taxonomy. (nmmra.org)
There is a point where additional morphological characters add little extra value (due to specificity) and the important factor is the quality of the data rather than the quantity. (nmmra.org)
To understand the cryptic diversity, species delimitation and phylogenetic relationships among members of the group, we analyzed morphological data (light and scanning electron microscopy) and molecular data (nuclear small subunit [SSU] and large subunit [LSU] rDNAs and plastid SSU and LSU rDNAs). (e-algae.org)
Aiming to evaluate previous phylogenetic analyses, we recoded unenlagiids in the traditional TWiG data matrix, which resulted in a large polytomy at the base of Pennaraptora. (frontiersin.org)
given various rankings) using mitogenomic data for which five alternative phylogenetic hypotheses have been previously proposed on the basis of both morphological and molecular analyses. (fish-evol.org)
Moreover our re-analysis of the previous molecular data produced a slightly different phylogenetic hypothesis compared to the original one. (foliamalacologica.com)
Comparing the results of the two data sets, it emerged that phylogenetic analysis based on morphological characters had good resolution but very low statistical support and that the position of Hypnophila boissii was the most variable. (foliamalacologica.com)
Multivariate analysis of morphological data was congruent with the genetic data and revealed similar pattern of relationship among Centracanthidae species. (blackmeditjournal.org)

Then in order to talk about improving methods, you need to find a group for which you are willing to say that the true phylogeny is known and then compare various methods of analysis to see which most reliably produce that true phylogeny. (nylxs.com)
Species for which only morphological information is available were integrated with the combined tree to give a provisional phylogeny for 31 species. (lacerta.de)
The most compelling open question for Blaxter focuses on phylogeny and the still unclear relationship between tardigrades, nematodes, and arthropods. (uncommondescent.com)
In morphological phylogeny this species had unresolved relationships with Gomeziella girottii and a clade including Azeca goodalli and all other species currently assigned to Hypnophila , whereas in the molecular phylogeny it was nested in the western Hypnophila . (foliamalacologica.com)

Bayesian and maximum likelihood analyses based on the combined four-gene dataset resulted in a tree consisting of two major clades within the group. (e-algae.org)

The resultant tree topologies from the MP and ML methods were congruent, although they differed from any of the previously proposed hypotheses. (fish-evol.org)
As Craseomys shanseius clustered with C. rufocanus in three gene phylogenies and this assessment was congruent with morphological results, we assigned C. shanseius to a subspecies of C. rufocanus . (mapress.com)

Our preferred analysis based on topology tests, suggests monophyly of the "symphytognathoids" (the miniature orb‐weavers), which in previous studies has only been supported by a combination of morphological and behavioral characters. (researchgate.net)
Phylogenetic analyses using different partition schemes and models of molecular evolution, as well as topology tests for alternative phylogenetic relationships, support the monophyly of Medusozoa, Anthozoa, Octocorallia, Hydrozoa, and a clade consisting of Staurozoa, Cubozoa, and Scyphozoa. (plos.org)
Reciprocal monophyly evidenced through phylogenetic analyses, sequence divergence values for both molecular markers, and detailed morphological analyses, including scanning electron microscopy photomicrographs, revealed three new genetic lineages, i.e., species, as parasites of M. curema . (parasite-journal.org)
We describe here the ' Cichlasoma ' facetum group as a new genus, Australoheros , and provide evidence for its monophyly based on phylogenetic analyses of morphological and mtDNA characters. (blogspot.com)
Minumum evolution, neighbor joining and parsimony trees revealed same tree topologies, and the monophyly of the genus Spicara was not supported. (blackmeditjournal.org)

The analyses of the total nad 1 dataset provided evidence for 12 monophyletic groups and five singletons, which represent seven described/named species and ten cryptic species-level lineages of Echinostoma . (biomedcentral.com)
In addition, this study suggests that the tyrannosaur family had a global distribution early in their evolutionary history and from the dataset, it seems that three distinct clusters of tyrannosaurs can be identified (numbers 1, 2 and 3 in the parsimonious analysis above). (everythingdinosaur.com)

The dissertation sought to understand the distribution range of Uropeltis jerdoni , discovered in 2021, through phylogenetic analysis, species distribution modelling, and morphometric analysis. (weebly.com)
Geometric morphometric techniques as well as dissections of soft bodies were utilized to investigate morphological differences. (fieldmuseum.org)

The results of the analysis support a fully basal position for the tribe Bradyporini. (uconn.edu)

A phylogenetic analysis of recent anseriform genera using morphological characters" (Full text). (wikipedia.org)
In addition, a new technique of assessing the probability of phylogenetic relationships between genera was applied, the first time such an analysis had been conducted on the Tyrannosauroidea - Baysian analysis. (everythingdinosaur.com)

Morphological analyses can produce dozens, maybe hundreds of characters, but traditional DNA techniques can produce thousands of characters," Simison explained. (calacademy.org)
UCE can produce millions of characters-we had 1.7 million characters in our analyses. (calacademy.org)
A phylogenetic analysis based on 331 morphological characters yielded multiple, most parsimonious trees of length 1994. (uconn.edu)
The characters used in the analysis included not only characters traditionally used in katydid systematics, but also characters never before evaluated, such as the structure of the tarsi, the thoracic endoskeleton, the internal structure of the ovipositor, and a number of egg characters. (uconn.edu)
The morphological analysis part was performed using both the vegetative and floral characters. (upm.edu.my)
Morphological characters were subsequently evaluated by mapping them onto the resultant phylogenetic tree (Kappner & Bieler, 2006). (fieldmuseum.org)
The study also showed that, despite a high amount of homoplasy in the morphological characters, a specific subset of those characters can be used to distinguish between members of the two subfamilies. (fieldmuseum.org)
The aim of this study was to find morphological characters that could be used to distinguish the two species, despite the morphological similarity of their exterior shell. (fieldmuseum.org)
Studies have shown that increasing the amount of characters provides a higher accuracy for the construction of a tree [2]. (nmmra.org)
Several coding schemes of morphological characters are used to recover the intrageneric relationships within the genus, resulting in very similar topologies. (blogspot.com)

In addition to the three described species of Australoheros , our results of species delimitation based on a combination of tree- and character-based approaches identify seven putatively new species of Australoheros . (blogspot.com)

Both rooted and unrooted phylogenetic trees can be either bifurcating or multifurcating , and either labeled or unlabeled . (wikidoc.org)
This has had grave implications on the creation of phylogenetic trees. (nmmra.org)
Therefore morphology as a basis for the construction of phylogenetic trees is a very low resolution and highly contestable method. (nmmra.org)

Despite clear records of its morphological structure, its genetics, systematics, and biology are poorly understood. (nature.com)
The molecular systematics analysis had given a robust estimation on the phylogenetic relationships of Coelogyne, which implied that the molecular markers rbcL, matK and trnL-F and nrITS are reliable for the systematics studies of Coelogyne species in Peninsular Malaysia. (upm.edu.my)

Besides the already-mentioned morphological Venerinae-Chioninae discriminators (siphonal fusion, anterior lateral tooth), this study found subtle but unambiguous morphological differences in the region of the pallial sinus. (fieldmuseum.org)
The recent discovery of morphological differences in the brainstem of infants who have died from SIDS indicates that such cases may represent immature development of centers responsible for arousal, cardiovascular, and respiratory functions. (medscape.com)

As we sequence more and more organisms, the "tree of life" will continue to take shape, adding new members and redefining relationships. (calacademy.org)
BioEdit: a user-friendly biological sequence alignment editor and analysis program for Windows 95/98/NT. (blackmeditjournal.org)
After phylogenetic studies and sequence identity analyses, all three isolates are proposed as new mycoviruses. (bvsalud.org)
To expand on this previous work, we developed a multilocus sequence typing analysis with two aims: first, to investigate the genetic diversity within strains of North American R. parkeri s. s., and second, to further the understanding of the genetic relationships between R. parkeri s. s. and R. parkeri s. l. (cdc.gov)

At less than a millimetre in length, tardigrades are too small to leave fossils, but using the new genomes, the scientists were able to explore what the DNA could tell them about where tardigrades sit in the tree of animal life. (uncommondescent.com)
Dawson described several early Devonian plants from Canada and Scotland and interpreted these early fossils as primitive vascular plants showing a degree of morphological simplicity unknown in extant groups. (nmmra.org)

A selection of 17 azecid species, including Azeca goodalli , Gomeziella girottii , Hypnocarnica micaelae , four species of Cryptazeca and ten species currently assigned to Hypnophila , chosen among those best known, were investigated to elucidate their relationships based on morphological and molecular evidence. (foliamalacologica.com)

Morphological trait measurements were combined with architectural parameters and analyzed using two-way ANOVA, principal components analysis and hierarchical clustering. (academicjournals.org)
However, the degree of AM colonisation was not related to any measured root morphological trait. (springer.com)

Even though individual marker was insufficient to solve the evolutionary relationship of a whole genus, but the combination of chloroplastid markers (rbcL, matK and trnL-F) and nrITS which from different regions greatly improved the systematic study. (upm.edu.my)
In microalgae, an insufficient number of morphological features that could be used to clearly distinguish one species from another enhances the problem of species delimitation. (e-algae.org)
recent molecular analyses reveal insufficient genetic divergence to separate these as distinct species. (cdc.gov)

Our coalescent species tree of 544 and 77 single-copy nuclear genes supported series Campestria as monophyletic, with A. yangjuechi having the closest relationship with A. miaotaiense . (jse.ac.cn)
U. jerdoni samples from the Western Ghats and the Deccan Plateau were analyzed alongside other Uropeltis species to understand the genetic relationship within the target samples and to delimit species boundaries using three mitochondrial genes (12s, ND4 and 16s). (weebly.com)
RNA sequencing analysis revealed the maximum number of differentially expressed genes in the fungus during the stroma formation stage compared with those during the mycelium stage. (bvsalud.org)
Increasingly, the collections are also used to extract DNA and thus enable studies of species' relationships, distribution history and population genetics, or to investigate the expression, variation or change of different genes over time. (lu.se)

Phylogenetic analyses using Maximum Likelihood and coalescent methods corroborate most nodes resolved by recent transcriptomic analyses, but not all (e.g. (researchgate.net)

Our study points out that multiple lines of phylogenomic, morphological, and ecological evidence prove highly useful in species delimitation. (jse.ac.cn)

A labeled tree has specific values assigned to its leaves, while an unlabeled tree, sometimes called a tree shape , only defines a topology. (wikidoc.org)

How this diversity originated and evolved is not well understood because phylogenetic relationships among major cnidarian lineages are unclear, and recent studies present contrasting phylogenetic hypotheses. (plos.org)

Phylogenomic methods have proven useful for resolving deep nodes and recalcitrant groups in the spider tree of life. (researchgate.net)
And in the last few years, new methods of genetic analysis have become considerably more affordable, allowing sequencing of an entire group of species. (calacademy.org)
The use of morphological parameters is one of the common methods implemented to identify the date palm variation and level of diversity. (hindawi.com)

The zoosporic obligate endoparasites, Olpidium, hold a pivotal position to the reconstruction of the flagellum loss in fungi, one of the key morphological transitions associated with the colonization of land by the early fungi. (doe.gov)
Subsequent analyses need to focus on the impact of mycoviruses on the biology and pathogenicity of ARD-associated fungi. (bvsalud.org)

Other specimens were processed for morphological analyses. (parasite-journal.org)

Over a century later, evolutionary biologists still use tree diagrams to depict evolution because the floral analogy effectively conveys the concept that speciation occurs through the adaptive and random splitting of lineages. (wikidoc.org)

Parsimony analysis was performed with PAUP* 4.0 using Cochlicopa lubrica as outgroup. (foliamalacologica.com)

Our molecular and morphological analyses both identified three primary clades within Myodes and Alticola . (mapress.com)

Although salamanders of all body sizes had consumed a diverse range of prey items, we found evidence of an ontogenetic shift in prey utilization, with smaller salamanders consuming a significantly greater number of prey items than larger salamanders while there was no relationship between body size and mass of prey consumed. (bioone.org)

A phylogenetic tree , also called an evolutionary tree , is a tree showing the evolutionary relationships among various biological species or other entities that are believed to have a common ancestor . (wikidoc.org)

Robust and unequivocal interactions have been identified confirming the phylogenetic tree, although it's intricacies and temporal detail is still far from complete. (nmmra.org)

Sequencing of the internal transcribed spacer regions of ribosomal DNA, alignment with GenBank, and use of a Basic Local Alignment Search Tool analysis led to the identification of P. lilacinum. (bvsalud.org)

Due to its unique morphology and its representation only by dental remains, its place on the mammalian evolutionary tree has been a subject of contention and debate. (eurekalert.org)
This evolutionary tree suggests a close evolutionary relationship between North American Ekgmowechashala and Palaeohodites from China, which Chris and his colleagues discovered in the 1990s. (eurekalert.org)
According to Brian Simison , Director of the Academy's Center for Comparative Genomics (CCG), the placement of turtles on the evolutionary tree was suspected for a long time-and even supported by the fossil record. (calacademy.org)
Although the idea of a "tree of life" arose from ancient notions of a ladder-like progression from lower to higher forms of life (such as in the Great Chain of Being), Charles Darwin (1859) first illustrated and popularized the notion of an evolutionary "tree" in his seminal book The Origin of Species . (wikidoc.org)

The extensive collections are also an invaluable source for studies of morphological variation over time and space. (lu.se)
The piperine content in various parts of Piper longum (Piperaceae) plant, and its variation with maturity in the berries were studied by HPLC analysis. (who.int)

The results from our analysis unequivocally supports this hypothesis. (eurekalert.org)
Based on the results of this analysis the evolution of female stridulation has been reconstructed. (uconn.edu)
Taken together, these results further resolve deep cnidarian relationships, largely support traditional phylogenetic views on relationships, and provide a historical framework for studying the evolutionary processes involved in one of the most ancient animal radiations. (plos.org)

Unrooted trees illustrate the relatedness of the leaf nodes without making assumptions about common ancestry. (wikidoc.org)
The number of possible trees for a given number of leaf nodes depends on the specific type of tree, but there are always more multifurcating than bifurcating trees, more labeled than unlabeled trees, and more rooted than unrooted trees. (wikidoc.org)

In a phylogenetic tree, each node with descendants represents the most recent common ancestor of the descendants, and the edge lengths in some trees correspond to time estimates. (wikidoc.org)
A rooted phylogenetic tree is a directed tree with a unique node corresponding to the (usually imputed ) most recent common ancestor of all the entities at the leaves of the tree. (wikidoc.org)
A recent study of the HOX clusters of the Indonesian coelacanth Latimeria menadoensis 14 found features indicating stasis in genome evolution that may be correlated with the stasis in morphological evolution. (nature.com)

The initially assumed relationship with the dabbling duck subfamily Anatinae[citation needed] has been questioned, and it appears they form a lineage in an ancient Gondwanan radiation of waterfowl, within which they are of unclear affinities. (wikipedia.org)
The aim of this study was to clarify phylogenetic relationships of this group from family- to species-level and to provide a first view of historical biogeographic patterns in the subfamily. (fieldmuseum.org)

Ancient Amazon soils are characterised by low concentrations of soil phosphorus (P). Therefore, it is hypothesised that plants may invest a substantial proportion of their resources belowground to adjust their P-uptake strategies, including root morphological, physiological (phosphatase enzyme activities) and biotic (arbuscular mycorrhizal (AM) associations) adaptations. (springer.com)

This study aimed to determine the complete mitochondrial (mt) genome of W. compar and reconstruct its phylogenetic relationship with other nematodes. (nature.com)

Anatomy34

Organisms70

Diseases2

Chemicals and Drugs24

Analytical, Diagnostic and Therapeutic Techniques and Equipment43

Phenomena and Processes65

Disciplines and Occupations8

Anthropology, Education, Sociology and Social Phenomena2

Technology, Industry, Agriculture7

Information Science13

Health Care22

Geographicals3

Based on morphological characteristics2

Taxonomic8

Characteristics8

Together with morphological2

Sequences10

Traits9

Maximum parsimony3

Taxa4

Cladistic3

Data31

Phylogeny4

Bayesian1

Congruent2

Monophyly5

Dataset2

Morphometric2

Basal1

Genera2

Characters10

Species delimitation based1

Phylogenetic trees3

Systematics2

Differences2

Sequence4

Fossils2

Elucidate1

Trait2

Insufficient3

Genes4

Coalescent1

Ecological1

Topology1

Hypotheses1

Methods3

Fungi2

Specimens1

Lineages1

Outgroup1

Clades1

Evidence1

Biological1

Temporal1

Ribosomal1

Evolutionary tree4

Variation2

Results3

Leaf2

Recent3

Subfamily2

Substantial1

Mitochondrial1