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Case Reports
. 1982;62(3):282-4.
doi: 10.1007/BF00333538.

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

R T Howell, A McDermott
Case Reports

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

R T Howell et al. Hum Genet. 1982.

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.

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References

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