| Autor: |
Bavin, J. T. R., Marshall, Ruth, Delhanty, Joy D. A. |
| Předmět: |
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| Zdroj: |
Journal of Mental Deficiency Research; Dec1963, Vol. 7 Issue 2, p84-89, 6p |
| Abstrakt: |
The article presents a case study related to a mongol with a 21:22 type chromosomal translocation. The observation that patients with mongolism have 47 chromosomes instead of 46 as in the normal human karyotype has been confirmed by many workers. Such patients have an additional small acrocentric chromosome belonging to group 21-22, and by convention considered to be a 21. A small group of mongols have 46 chromosomes, but they also are effectively trisomic for number 21. This is because one chromosome 21 has fused with another large or small acrocentric. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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