- (D) Daniel is most likely to be diagnosed with autism, an impairment of social development.
Common symptoms include delayed speech, avoiding eye contact, and a preference for routine. A
description of Down syndrome, or trisomy 21, is likely to mention an extra chromosome on the
21st pair and a degree of intellectual impairment. A description of fetal alcohol syndrome would
probably include mention of a mother who drank while pregnant and would likely also mention
intellectual impairment. The hallmark of mental retardation is intellectual functioning that is
significantly below average. Klinefelter’s syndrome results from a chromosomal abnormality of
the sex chromosomes; boys with Klinefelter’s syndrome have an XXY genotype. Signs of
Klinefelter’s syndrome include small testes, atypical secondary sex development, and infertility.
marvins-underground-k-12
(Marvins-Underground-K-12)
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