Ascertainment in the sequential sampling of pedigrees

Abstract
Provided all observed families are included in the pedigree analysis, even those which appeared uninteresting or sporadic and were not sampled further, and provided a decision to continue sampling is made conditional on types observed up to that point, the correct likelihood for the mode of inheritance may be easily computed. This opens the way for a more detailed study of the wider problem of optimal sampling rules on pedigrees.