Down Syndrome
Definition
Down Syndrome is a genetic disorder caused by the presence of an extra 21st chromosome. It's characterized by physical growth delays, characteristic facial features, and mild to moderate intellectual disability.
Related terms
Trisomy 21: This is another name for Down Syndrome because it involves three copies (tri) of chromosome 21 instead of the usual two.
Genetic Disorder: A disease or condition caused by abnormalities in an individual's genome. Down syndrome is an example of a genetic disorder.
Chromosome Abnormality: Any change in the normal structure or number of chromosomes—often resulting in physical or mental abnormalities.
"Down Syndrome" appears in:
Subjects (1)
AP Biology
Study guides (2)
AP Psychology - 5.10 Psychometric Principles and Intelligence Testing
AP Psychology - 8.3 Neurodevelopmental and Schizophrenic Spectrum Disorders
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Resources
Cram Mode
AP Score Calculators
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Glossary
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Crisis Text Line
Help Center
© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.