In a discussion conducted in the GNXP Backchannel focusing primarily on whether the number of loci per se affecting a quantitative trait bears some relationship to the expected trait difference between siblings, one of us mentioned the treatise-in-progress Evolution and Selection of Quantitative Traits by Mike Lynch and Bruce Walsh, the sequel to their tour de force Genetics and Analysis of Quantitative Traits (one of textbooks in the right sidebar with the GNXP seal of approval). My fellow GNXPer Fly found the link to its chapters that have been completed thus far quite useful and expressed surprise that we had not linked to it on the front page. So, here it is.

I've only read portions of the new volume, but plan to pore over it from front to back as soon as it is published in book form and perhaps sooner. I anticipate that the subject matter of the book will become more important as it is realized that many traits of evolutionary interest are not of the single-locus Mendelian brand but rather are dimensional (and even multidimensional).