We are mapping a disease gene. We have four markers (A, B, C, and D) that are linked to the gene. We ran two mutipoints: first, phenotype and A, B, and C; second, phenotype and B, C, and D. Now here is my question: Does anyone knows the best and the right way to put these two runs together. Alex Nechiporuk, Cedars Sinai Medical Center, Los Angeles.