Replication status of the fragile X chromosome, fra(X)(q27), in three heterozygous females.

Abstract:

:Investigation of lymphocyte cultures from three females heterozygous for fra(X)(q27) shows widely differing proportions of early and late replicating X chromosomes having the fragile site, and suggests that the replication status of the fragile X may be related to the mental capacity of the patient. The study has utilised a sequential staining technique to reduce ascertainment bias, and evidence is presented to suggest that the expression of the fragile site is independent of the differential incorporation of BUdR into the early and late replicating X chromosomes.

journal_name

Hum Genet

journal_title

Human genetics

authors

Howell RT,McDermott A

doi

10.1007/BF00333538

subject

Has Abstract

pub_date

1982-01-01 00:00:00

pages

282-4

issue

3

eissn

0340-6717

issn

1432-1203

journal_volume

62

pub_type

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