Sentences with phrase «on phylogenetic relationships»

Further, if the group being studied is only known from fossil evidence (e.g., mosasaurs), then morphology is the only informative data set on phylogenetic relationships and paleobiology.

«Based on the phylogenetic relationships and the presence of tetrachromacy in recent tetrapods it is most likely that the stem species - of all terrestrial vertebrates had photo receptors to detect blue, green, red and uv,» says Dr. Christian Fischer of the University of Göttingen.

The DNA code also represents a rich resource for addressing questions on phylogenetic relationships between animals.

Not exact matches

The paper, titled: «A new basal sauropodiform from South Africa and the phylogenetic relationships of basal sauropodomorphs,» was published online on Tuesday, 23 June 2015.

«My research activities and interests were largely in phylogenetics, evolution and biodiversity — collecting and analyzing diverse data sets to reconstruct species relationships and also working on methods and theory in the field,» said Kearney.

Today, many ecological and evolutionary studies depend on a wide range of molecular tools to infer phylogenetic relationships, uncover population structure within species, and track quantitative traits.

We therefore performed two independent phylogenetic analyses based on larger subsets of the nuclear data, whole - exome sequences and all polymorphic sites, to reconstruct the most likely relationships between ancient and modern horses.

Wiens [63] suggested that it should be possible to design phylogenetic analyses that will resolve higher - level relationships with large numbers of slow - evolving characters and then place additional taxa on this scaffold through the use of a smaller number of more rapidly evolving characters.

Phylogenetic relationships in Figures 1, 2, 3, 4, 5 are largely confirmatory of recent studies on higher - level relationships among primates [3], [12], [15], [21], [22], as well as relationships within Lorisiformes [3], [12], [15],, Lemuriformes [3], [7], [8], [11], [12], [15], [25]--[38], Tarsiiformes [39], [40], Catarrhini [3], [12], [15], [41]--[50], and Platyrrhini [3], [12], [15], [51]--[62].

He has particular interests in (1) the use of ancient DNA methods to document changes in genetic variation through time and phylogenetic relationships of extinct or endangered organisms (especially of the recently extinct Hawaiian avifauna); (2) the use of highly variable genetic markers to measure genetic structure and relatedness, and to ascertain mating systems, in natural populations, and (3) the use of genetics to study the evolutionary interactions between hosts, vectors and infectious disease organisms (e.g., major projects on introduced avian malaria in native Hawaiian birds and invasive chytrid fungus in amphibians).

The 150,000 - year window is based on mitochondrial genome data, and since nuclear data show a different phylogenetic pattern and confirm a sister relationships between the two species, it is no surprise that an estimated split between these two species appear to be older.