A core dump of all the lines of research undertaken in my lab at U-Wis 1947-51. It includes the growing shadows of efforts at linear linkage analysis and a "formal!!" branched (nonlinear) map. That is at least partly explained by the Jacob-Wollman progressive transfer model; though Alfoldi and others continue to express some doubts. Cf: ALFOLDI L, BACHRATI C GENETIC EXPERIMENTS WITH MODEL POPULATIONS - FALLACIES IN GENETIC-ANALYSIS PERFORMED FROM SAMPLES OF RECOMBINANTS SELECTED FOR 2 MARKERS FEMS MICROBIOL REV 12: (4) 315-324 NOV 1993 .... much more comment is warranted ... jl 1/15/99