97805fb2ceb73357aa78aa94107148dc355d4e1c mspeir Tue Sep 22 08:36:22 2026 -0700 Conservation tracks: give the description pages a real Data Access section, refs #34803 The hgdownload link block on these pages had no header, and on 18 of them it sat above the Description, which is where it got overlooked. Move it into an
The track configuration options allow the user to display the conservation scores. In full and pack display modes, conservation scores are displayed as a wiggle track (histogram) in which the height reflects the size of the score. The conservation wiggles can be configured in a variety of ways to highlight different aspects of the displayed information. Click the Graph configuration help link for an explanation of the configuration options.
Pairwise alignments of each species to the $organism genome are displayed below the conservation histogram as a grayscale density plot (in @@ -300,30 +290,62 @@
The conserved elements were predicted by running phastCons with the --most-conserved (aka --viterbi) option. The predicted elements are segments of the alignment that are likely to have been "generated" by the conserved state of the phylo-HMM. Each element is assigned a log-odds score equal to its log probability under the conserved model minus its log probability under the non-conserved model. The "score" field associated with this track contains transformed log-odds scores, taking values between 0 and 1000. (The scores are transformed using a monotonic function of the form a * log(x) + b.) The raw log odds scores are retained in the "name" field and can be seen on the details page or in the browser when the track's display mode is set to "pack" or "full".
++The alignments and the conservation scores can be retrieved for a single region or for a list of +regions with the Table Browser, which +returns the alignments in MAF format and the scores as wiggle data. The scores and the conserved +elements, though not the alignments, can also be joined with other annotations in the Data Integrator. For automated access, our REST API serves the alignment and conservation tracks +individually, by name. +
++Downloads for data in this track are available: +
+Genome-wide alignment and conservation files are large. Among our command-line programs, +mafsInRegion, mafSpeciesSubset and mafFrags pull out a region, a +subset of species, or the alignment underlying a gene, and bigWigToWig and +bigWigSummary read the conservation files. They can be downloaded from the utilities directory, and +each one prints its usage when run with no arguments. See our Data Access FAQ for more information. +
+This track was created using the following programs: