Sexual dimorphism in genetic parameters is examined for wing dimensions of Drosophila melanogaster. Data are fit to a quantitative genetic model where phenotypic variance is a linear function of additive genetic autosomal variance (common to both sexes), additive genetic X-linked variances distinct for each sex, variance due to common rearing environment of families, residual environmental vari...

Cystic fibrosis (CF) is the most common genetic disease among Caucasians. Duchenne muscular dystrophy (DMD) is one of the most common X-linked genetic disorders. The CF and DMD genes were discovered a few years ago, which provided the possibility for prenatal diagnosis and preimplantation diagnosis of CF and DMD by using specific DNA analysis. In this article, CF, DMD, the process of the identi...

Fabry's disease is an X-linked lysosomal storage disorder caused by abnormalities in the α-galactosidase A (GLA) gene, which leads to a GLA deficiency and to the intracellular deposition of globotriaosylceramide (Gb3) within vascular endothelium and other tissues. It manifests as progressive multiple organ dysfunctions caused by the deposition of Gb3. On the other hand, congenital agammaglobuli...

Background Duchenne Muscular Dystrophy (DMD) is a deadly X-linked recessive disorder. This genetic disorder affects 1 among 3,500-5,000 males in the world. The majority of the patients are male, due to the type of inheritance. It affects most of the skeletal, the respiratory, and cardiac muscles, causing these vital organs to contract and eventually mortality.<br...

skin, starting from face since the age of 4 years. There was history of recurrent episodes of loose motions, vomiting and fever after the age of 4 years in the elder sibling for which he was hospitalized in a state of shock. Family history, perinatal history and developmental history were non-contributory. General and systemic examinations were unremarkable except for the generalized hyperpigme...

Four male members of a family are known to have congenital mitral and aortic insufficiency, a fifth male has congenital mitral insufficiency only, and a sixth male had congenital heart disease by history. The involved males comprised all males in three generations of this family. Chromosomal and dermatoglyphic studies of the two living affected males are normal. The involvement of males in this...