bioRxiv preprint doi: https://doi.org/10.1101/000687; this version posted October 6, 2014. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY 4.0 International license. Human genetics and clinical aspects of neurodevelopmental disorders Gholson J. Lyon1,2,3,*, Jason O’Rawe1,3 1Stanley Institute for Cognitive Genomics, One Bungtown Road, Cold Spring Harbor Laboratory, NY, USA, 11724 2Institute for Genomic Medicine, Utah Foundation for Biomedical Research, E 3300 S, Salt Lake City, Salt Lake City, UT, USA, 84106 3Stony Brook University, 100 Nicolls Rd, Stony Brook, NY, USA, 11794 * Corresponding author: Gholson J. Lyon Email:
[email protected] Other author emails: Jason O'Rawe:
[email protected] 1 bioRxiv preprint doi: https://doi.org/10.1101/000687; this version posted October 6, 2014. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY 4.0 International license. Introduction “our incomplete studies do not permit actual classification; but it is better to leave things by themselves rather than to force them into classes which have their foundation only on paper” – Edouard Seguin (Seguin, 1866) “The fundamental mistake which vitiates all work based upon Mendel’s method is the neglect of ancestry, and the attempt to regard the whole effect upon off- spring, produced by a particular parent, as due to the existence in the parent of particular structural characters; while the contradictory results obtained by those who have observed the offspring of parents apparently identical in cer- tain characters show clearly enough that not only the parents themselves, but their race, that is their ancestry, must be taken into account before the result of pairing them can be predicted” – Walter Frank Raphael Weldon (Weldon, 1902).