FIG. 1.

Chlamydomonas molecular and genetic maps. For each of the 17 linkage groups, the genetic map (adapted from the work of Harris [46]) is shown on the right, with the centromere represented by the black oval, and the molecular map is shown on the left. For genetic maps, spaces between markers represent recombination units (percent recombination); the scale bar is to the right of the maps for linkage group XIX. For molecular maps, numbers to the left of the vertical line indicate centimorgans (Kosambi units). The order of molecular markers placed on the map is predicted to be accurate with a Lod score of at least 2.0 by use of MAPMAKER/QTL 3.0 (78). For markers that could not be ordered with a Lod score of at least 2.0, the “try” command was used to determine the most likely map position. Such markers are enclosed in parentheses. For markers separated by commas on the same line, the order was indistinguishable by recombination. Dashed lines connecting the genetic and molecular maps indicate a molecular marker corresponding directly to a previously mapped phenotypic marker. The orientation of the molecular map with respect to the genetic map has not been confirmed for linkage groups VIII, XV, and XVI/XVII. Further information on the markers is available at http://www.biology.duke.edu/chlamydb/.