Segregation of an X ring chromosome in two generations

A 45,X/46,X,r(X) mosaicism was found in a mother and daughter. Characterisation of the ring by banding studies showed that breakpoints had occurred at bands Xp13 and Xq27. It is confirmed that women heterozygotes for partial deficiencies of the short arm of an X chromosome are fertile. Although the...

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Veröffentlicht in:Journal of medical genetics 1980-08, Vol.17 (4), p.306-308
Hauptverfasser: Dallapiccola, B, Bruni, L, Boscherini, B, Pasquino, A M, Chessa, L, Vignetti, P
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container_end_page 308
container_issue 4
container_start_page 306
container_title Journal of medical genetics
container_volume 17
creator Dallapiccola, B
Bruni, L
Boscherini, B
Pasquino, A M
Chessa, L
Vignetti, P
description A 45,X/46,X,r(X) mosaicism was found in a mother and daughter. Characterisation of the ring by banding studies showed that breakpoints had occurred at bands Xp13 and Xq27. It is confirmed that women heterozygotes for partial deficiencies of the short arm of an X chromosome are fertile. Although the mother developed secondary amenorrhoea at the age of 29, it is suggested that fertility per se may not be affected by deficiencies of the distal part of Xq.
doi_str_mv 10.1136/jmg.17.4.306
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Characterisation of the ring by banding studies showed that breakpoints had occurred at bands Xp13 and Xq27. It is confirmed that women heterozygotes for partial deficiencies of the short arm of an X chromosome are fertile. 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source MEDLINE; EZB-FREE-00999 freely available EZB journals; PubMed Central; Alma/SFX Local Collection
subjects Breakpoints
Chromosome Aberrations
Chromosomes
Dermatoglyphics
Female
Heterozygotes
Humans
Karyotyping
Mosaicism
Pedigree
Research Article
Sex Chromosomes - ultrastructure
X Chromosome - ultrastructure
title Segregation of an X ring chromosome in two generations
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