Bromodeoxyuridine replication patterns showed that fibroblasts from a 69,XXY triploidy carried either one or two early replicating X chromosomes. The activity of alpha-galactosidase A measured in single cells fell into two classes with a ratio of 1:2. Dilute plating produced clones of both types wit
Evidence for two active X chromosomes in a human XXY triploid
✍ Scribed by David D. Weaver; Stanley M. Gartler; André Boué; Joëlle G. Boué
- Publisher
- Springer
- Year
- 1975
- Tongue
- English
- Weight
- 325 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0340-6717
No coin nor oath required. For personal study only.
✦ Synopsis
A human XXY chromatin negative triploid culture has been found to have both the A and B isozymes of glucose-6-phosphate dehydrogenase, as well as an intermediately migrating AB (hybrid) band. This finding indicates that the cells in this culture each possess 2 active X chromosomes. Possible mechanisms producing the abnormalities seen in this disorder are presented and discussed.
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