CONSANGUINEOUS MARRIAGE AND DEAF-MUTISM.

Deaf-Mutism

The author of this book pleads for indulgence to any shortcomings of language, on the ground that he is not an Englishman, but such indulgence is by no means necessary inasmuch as the language would do credit to any English writer. The book bristles with statistics which are, of course, drawn largely from Danish sources, but tables are also given from all countries ?f Europe as well as from Ame...

1 Consanguineous marriage , past and present

Major problems can arise when a term with a quite specific scientific definition becomes part of everyday speech. A prime example of this phenomenon is the word mutation, acknowledged within science as denoting a change in genetic structure and the driving force of evolution. But to members of the general public a mutation almost inevitably denotes a change that is at best disadvantageous and i...

Hearing Impairments in Consanguineous Marriage

Consanguineous marriage is strongly favored in many large human populations. In the most parts of south Asia, consanguineous marriage account for 20%  to over 50% of the general population. The effect of consanguinity on hereditary deafness has been well studied and documented. Many authors have suggested that approximately one half  of sensory neural hearing loss in children can be attributed ...

A Background Summary of Consanguineous Marriage

Prevalence and genetic aspects of deaf mutism in Shanghai.

Two hundred and eighty-five cases of congenital deaf mutism were ascertained in a population of 483,611 in Zhabei District in Shanghai. The prevalence was 0.059% (1:1697). Inherited cases accounted for 84.83% of all cases. The mode of inheritance was autosomal recessive with complete penetrance and heterogeneity (consisting of at least five different loci). The fitness was 77.63%, the coefficie...