Homologous genes for X-linked chondrodysplasia punctata in man and mouse. 1983

R Happle, and R J Phillips, and A Roessner, and G Jünemann

X-linked dominant chondrodysplasia punctata is a human gene defect characterized by punctate foci of epiphyseal calcification, cataracts, ichthyosis, and systematized atrophoderma. In a comparative study, the murine X-linked mutant 'bare patches' was found to display strikingly similar skeletal, ocular, and cutaneous anomalies. The human as well as the murine phenotypes occur exclusively in the female sex, apparently because the underlying mutations are lethal for male embryos. In both traits, the cutaneous lesions are arranged in a linear and blotchy pattern reflecting lyonization. The observed similarities constitute strong evidence that the two genes are homologous. The proposed homology is a further example of the evolutionary conservatism of the X-chromosome in mammals.

UI MeSH Term Description Entries
D007231 Infant, Newborn An infant during the first 28 days after birth. Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D008040 Genetic Linkage The co-inheritance of two or more non-allelic GENES due to their being located more or less closely on the same CHROMOSOME. Genetic Linkage Analysis,Linkage, Genetic,Analyses, Genetic Linkage,Analysis, Genetic Linkage,Genetic Linkage Analyses,Linkage Analyses, Genetic,Linkage Analysis, Genetic
D002806 Chondrodysplasia Punctata A heterogeneous group of bone dysplasias, the common character of which is stippling of the epiphyses in infancy. The group includes a severe autosomal recessive form (CHONDRODYSPLASIA PUNCTATA, RHIZOMELIC), an autosomal dominant form (Conradi-Hunermann syndrome), and a milder X-linked form. Metabolic defects associated with impaired peroxisomes are present only in the rhizomelic form. Chondrodystrophia Calcificans Congenita,Conradi-Hunermann Syndrome,Dysplasia Epiphysialis Punctata,Epiphyses, Stippled,Stippled Epiphyses,Chondrodysplasia Punctata 2, X-Linked,Chondrodysplasia Punctata 2, X-Linked Dominant,Conradi Hunermann Happle Syndrome,Conradi-Hunermann-Happle Syndrome,Conradi-Hünermann Syndrome,Conradi-Hünermann-Happle Syndrome,Happle Syndrome,Hunermann-Conradi Syndrome,X-Linked Chondrodysplasia Punctata 2,X-Linked Dominant Chondrodysplasia Punctata,Chondrodysplasia Punctata 2, X Linked,Chondrodysplasia Punctata 2, X Linked Dominant,Conradi Hunermann Syndrome,Conradi Hünermann Happle Syndrome,Conradi Hünermann Syndrome,Conradi-Hunermann-Happle Syndromes,Conradi-Hünermann Syndromes,Conradi-Hünermann-Happle Syndromes,Hunermann Conradi Syndrome,X Linked Chondrodysplasia Punctata 2,X Linked Dominant Chondrodysplasia Punctata
D005075 Biological Evolution The process of cumulative change over successive generations through which organisms acquire their distinguishing morphological and physiological characteristics. Evolution, Biological
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012376 Rodent Diseases Diseases of rodents of the order RODENTIA. This term includes diseases of Sciuridae (squirrels), Geomyidae (gophers), Heteromyidae (pouched mice), Castoridae (beavers), Cricetidae (rats and mice), Muridae (Old World rats and mice), Erethizontidae (porcupines), and Caviidae (guinea pigs). Disease, Rodent,Diseases, Rodent,Rodent Disease
D012730 Sex Chromosomes The homologous chromosomes that are dissimilar in the heterogametic sex. There are the X CHROMOSOME, the Y CHROMOSOME, and the W, Z chromosomes (in animals in which the female is the heterogametic sex (the silkworm moth Bombyx mori, for example)). In such cases the W chromosome is the female-determining and the male is ZZ. (From King & Stansfield, A Dictionary of Genetics, 4th ed) Gonosomes,Chromosome, Sex,Chromosomes, Sex,Gonosome,Sex Chromosome
D014960 X Chromosome The female sex chromosome, being the differential sex chromosome carried by half the male gametes and all female gametes in human and other male-heterogametic species. Chromosome, X,Chromosomes, X,X Chromosomes

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