Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Release Notes

May 2023

  • genes display exon-intron structure when zoomed enough
  • improved behavior of in-context hints on the ideogram widget
  • added the ability to zoom by dragging over the gene’s density histogram
  • added the ability to return to the whole genome dotplot using the web browser back button
  • new dotplot view is available
  • alignment connectors are shown even when one end of the alignment is offscreen
  • fixed a bug that prevented you from going to a previous view using the web browser back button
  • additional minor improvements and bug fixes

April 2023

  • You can now flip the orientation of a chromosome to better evaluate gene synteny in regions that are inverted in one assembly relative to another

March 2023

  • you can now download the FASTA alignment file for an alignment segment via the right-click menu
  • you can open the pairwise alignment in the NCBI MSA viewer via the right-click menu
  • you can also open a panel that shows a preview of the alignment sequence
  • Genome Data Viewer (GDV) opened from the right-click menu will zoom to the same coordinates as shown in CGV
  • we improved the order of organisms in the selection menu on the CGV home page
  • made improvements to page accessibility and rendering on mobile devices
  • additional animal cross-species alignments added
  • additional small improvements and bug fixes

January 2023

  • new visual style for alignments including "twist" for reverse alignments
  • forward and reverse alignments are colored distinctly (green and purple)
  • new filtering option to view only forward or reverse alignments
  • you can now click on annotated gene to zoom to the region in the alignment
  • added more in-context hints
  • additional style tweaks

December 2022

  • new ability to search for genes in the viewer
  • you can now adjust the font size of labels and other text in the viewer
  • downloaded SVG image can be edited in a wider range of image editors
  • additional bug fixes and style tweaks

October 2022

  • you can download an SVG image of the view you are looking at
  • the size of the alignment is now reported in the alignment information popover
  • navigation, view, and download options added to the alignment context right-click menu
  • some bug fixes and style updates

September 2022

  • you can switch your view to show all alignments, not just reciprocal best placed alignments
  • new Download menu for alignment data downloads
  • style changes to assembly titles on viewer page
  • style and behavior changes to alignment information popover
  • style changes to block size slider

August 2022

  • non-RefSeq assembly alignments are available
  • GDV genome browser sessions are now pre-configured to show assembly-assembly alignments as alignment and graph tracks
  • updates to behavior of alignment selection menu

July 2022

  • CGV is released as beta! Enjoy!
Last updated:Wednesday May 24, 2023