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. 1978 Nov 24;45(1):33-41.
doi: 10.1007/BF00277571.

A cytogenetic survey of an institution for the mentally retarded. II. C-band chromosome heteromorphisms

J Matsuura, M Mayer, P Jacobs

A cytogenetic survey of an institution for the mentally retarded. II. C-band chromosome heteromorphisms

J Matsuura et al. Hum Genet. .

Abstract

Heteromorphisms of chromosomes 1, 9, and 16 were studied by C-banding in a population of 403 mentally retarded individuals from diverse ethnic groups. A significant difference in the distribution of heteromorphisms was found among the different racial groups. The Orientals had a larger C-band on chromosome 1 and a smaller C-band on chromosome 9 than the other racial groups while the Caucasians had a larger C-band on chromosome 9. The Oriental group also had a significantly greater proportion of inverted C-bands. No differences were found in the distribution of C-band heteromorphisms among different etiologic categories of mental retardation.

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