Focal dermal hypoplasia (FDH) is a rare syndrome of severe developmental anomalies of the tissues and organs derived from ectoderm and mesoderm. Though data have suggested that FDH is an X-linked dominant trait associated with male hemizygote lethality, a hypothesis supported by the observation of three unrelated infants with FDH manifestations and de novo chromosome rearrangements involving Xp...

Nongenetic inheritance is a potentially important but poorly understood factor in population responses to rapid environmental change. Accumulating evidence indicates that nongenetic inheritance influences a diverse array of traits in all organisms and can allow for the transmission of environmentally induced phenotypic changes ('acquired traits'), as well as spontaneously arising and highly mut...

In this study flowering time and other important morphologic traits were evaluated during two years in F1 almond progenies of seventy two seedlings from cross between the intermediate flowering Italian cultivar ‘Tuono’ and the extra-late blooming Iranian cultivar ‘Shahrood-12’. A modified-bulk segregant analysis in combination with the application of the 140 RAPD primers, 87 nuclear ...

We present the CT and B-scan sonographic findings in an infant with juvenile retinoschisis, a rare hereditary eye disease, which usually follows an X-linked recessive inheritance pattern.

A A-linked design is an abstract system of v 'points' and b lines' such that every two points are joined by exactly A lines. A partial classification is given of those extremal examples with b = v, and necessary and sufficient conditions are proved for them to be of each of the only two non-trivial types known, namely square BIBDs and point-complemented square BIBDs. For each A > 1 the number o...