Positions of markers on various maps of the genome plotted against their derived position on the current sequence of chromosome 3. The maps used are the Genethon genetic map (red), the Marshfield genetic map (orange), the deCODE genetic map (maroon), the GeneMap99 radiation hybrid map (green), the Whitehead RH radiation hybrid map (violet), and the Whitehead YAC and radiation hybrid map (blue) (See Supplementary Methods for map references). Markers that map to other chromosomes are shown on the chromosome lines at the top. All chromosomes are on the same scale. ( The above image is linked to the Human Chr 3 annotation data deposited in Genboree. )