Podcast
Questions and Answers
What is the cause of Down Syndrome in 95% of cases?
What is the cause of Down Syndrome in 95% of cases?
- Extra copy of chromosome 20
- Extra copy of chromosome 21 (trisomy 21 (correct)
- Mitotic nondisjunction
- Unbalanced translocation
Which of the following is NOT a craniofacial abnormality commonly seen in individuals with Down Syndrome?
Which of the following is NOT a craniofacial abnormality commonly seen in individuals with Down Syndrome?
- Flat facies
- Large ears (correct)
- Small ears
- Upward slanting eyes
What is the incidence of Down Syndrome in conceptuses for women over the age of 40?
What is the incidence of Down Syndrome in conceptuses for women over the age of 40?
- 1 in 35
- 1 in 100 (correct)
- 1 in 2000
- 1 in 3
Flashcards
Cause of Down Syndrome (95%)?
Cause of Down Syndrome (95%)?
An extra copy of chromosome 21, also known as trisomy 21, is the cause of Down Syndrome in 95% of cases.
Craniofacial abnormality NOT in Down Syndrome?
Craniofacial abnormality NOT in Down Syndrome?
Large ears are not typically associated with Down Syndrome; common craniofacial features include a flattened face, upward slanting eyes, and a small mouth.
Down Syndrome incidence: women over 40?
Down Syndrome incidence: women over 40?
The incidence of Down Syndrome in conceptuses for women over 40 is approximately 1 in 100.
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