Loading...
  • temporal
  • If the temporal range of the sampled sequences is large relative to the rate of mutation, the sampling times can directly calibrate evolutionary rates to calendar time. (semanticscholar.org)
  • Here, we extend this calibration process to provide a full probabilistic method that utilizes temporal information in heterochronous data sets to estimate sampling times (leaf-ages) for sequenced for which this information unavailable. (semanticscholar.org)
  • Diversity
  • Subsequent major filicalean evolutionary radiations during the Early Mesozoic yielded several families with extant representatives, but it was not until the Upper Cretaceous, after flowering plants had become dominant over much of the land surface, that much of extant fern diversity seems to have appeared. (tolweb.org)
  • Can selection to minimize the effects of translational and/or mutational errors explain codon usage patterns in microbes despite their diversity? (nsf.gov)
  • factors and processes that influence diversity of sea life. (ucdavis.edu)
  • A general survey of the origins of biological diversity and evolutionary mechanisms. (ucdavis.edu)
  • responses
  • Evolutionary responses to high tooth wear in sauropods - including changes in tooth volume and tooth replacement rate - are first recorded shortly after their divergence from sauropodomorph ancestors. (plos.org)
  • research
  • Primarily, the research pursues the preliminary observations that patterns of codon usage bias in bacteria appear to reflect selection for error minimization, and phage genome type (e.g. dsDNA vs. ssDNA) appears to influence the degree of error minimization, but not the degree to which phage codon usage reflects host codon usage. (nsf.gov)
  • complex
  • This so-called 'calcifying matrix' is a complex mixture of proteins, glycoproteins and polysaccharides that is assembled and occluded within the mineral phase during the calcification process. (royalsocietypublishing.org)