a dermatoglyphics at a syndrome of Down

Patterns grebeshkovoj skins are long since used embriologami and teratologami for morphgenesis studying, i.e. research of a differentiation of organs and tissues [140]. The Dermatoglifichesky drawing begins

To be formed of an ectoderm on term of 6 weeks and comes to the end by 24 week gestatsii [139].

Drawing 6. A.Tipy of manual patterns. A curl (Whorl) - 1, a loop (Loop) - 2, an arch (Arch) - 3 [140].

Allocate such features of a dermatoglyphics, as dissociation (dysplasia) dermalnoj skins when the pattern is presented by an intermittent drawing of crests in the form of the short and often bent segments chaotically making patten fields, instead of a smooth course more or less parallel lines of true patterns (fig. 7).

Drawing 7. Dissociation dermalnoj skins of palms and fingers [140].

At SD the dermatoglyphics has characteristic signs in the form of prevalence of arches and ulnarnyh loops on the big finger, ulnarnyh loops on index and average fingers of [46,107] and radial loops on the fourth and fifth fingers, is frequent - high palmar triradius (fig. 8). The dermatoglyphics is important enough and invariable diagnostic criterion at chromosomal syndromes, including, and at SD.

In the spent foreign research [85] features of a dermatoglyphics of parents of children with SD were studied. It has appeared, that at mothers prevalence of arches (p