Summary
The analysis of a karyotype of a girl with slight mental retardation, without significant dysmorphism, showed the presence of a ring chromosome in group 13–15. By the application of G technique it was discovered that in this case it was an aberrant chromosome 15.
Besides retardation in growth and a slight mental backwardness in this case, it was confirmed that in cases of ring 15 syndrome no preponderant change appears in phenotype.
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References
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Rumenić, L., Joksimović, I. & Anaf, M. Ring chromosome 15 in child with a minor dysmorphism of phenotype. Hum Genet 33, 187–188 (1976). https://doi.org/10.1007/BF00281895
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DOI: https://doi.org/10.1007/BF00281895