𝔖 Bobbio Scriptorium
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CHROMOSOMES IN TRISOMY 21

✍ Scribed by Jérǒme Lejeune


Book ID
114878936
Publisher
John Wiley and Sons
Year
1970
Tongue
English
Weight
488 KB
Volume
171
Category
Article
ISSN
0890-6564

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Of 61 families of children with trisomy 21, polymorphism of chromosome 21 elucidating the origin of the extra chromosome was found in 42. Nondisjunction was of paternal origin in 8 cases (19.04%) and the anomaly occurred with equal frequency during the first and second meiotic divisions. Maternal no