Due to changes in the Google Map API used to create these chromosome maps,
some functionality available when these maps were created has recently been lost.
Specifically, the sequence coordinates and links to the FlyBase GBrowse tool
which were formerly accessed by hovering over the blue bar will no longer work.
FlyBase has no plans to update this tool to accommodate these changes.
It will remain here for the time being, but users should expect its usefulness
to degrade over time.