John Langdon Down
Jérôme Lejeune
Robert Bunsen
46
47
23
Celiac disease
Cancer
Cellulitis
20-30
40-50
60-70
Increases
Decreases
Remains the same
True
False
Impulsive behavior
Poor judgment
Long attention span
Chromosomal
Sex-linked
Recessive
John Langdon Down's Syndrome
Up Syndrome
Trisomy 21
True
False
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