We used Monte Carlo Markov chain (MCMC) methods to analyze a quantitative t
rait, MAO level, and a discrete trait, Collaborative Study on the Genetics
of Alcoholism (COGA) alcoholism. Segregation, linkage, and haplotype sharin
g were analyzed and effects of marker map features were examined. For MAO,
modest signals were found on chromosomes 1 and 17 for raw data, and 15 for
covariate-adjusted data. For alcoholism a strong signal was found on chromo
some 1 with modest signals on chromosomes 4 and 10. (C) 1999 Wiley-Liss, In
c.