Week+2+Thursday+Prenatal

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Click to edit Master subtitle style 11/17/10 Chromosome Abnormalities
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11/17/10 Down syndrome Chromosomally transmitted form of mental retardation Causes lifelong mental retardation, developmental delays and other problems. Varies in severity, developmental problems range from moderate to serious. Typically (90% of cases) caused by Trisomy 21 (trisomy 21 has three copies of chromosome 21 — instead of the usual two copies — in all of his or her cells). caused by abnormal cell division during the development of the sperm cell or the egg
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11/17/10 Klinefelter syndrome Disorder in males; extra X chromosome Physical development: XXY males have weak muscles and reduced strength Social development : As babies, XXY males tend to be quiet and undemanding Language development : As boys, between 25 percent and 85 percent of XXY males have some kind of language problem
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11/17/10 Fragile X syndrome Abnormality in X chromosome; becomes constricted or breaks Physical features : enlarged ears, long face with prominent chin, and large testicles (in post pubertal males) are common. Connective tissue problems:
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This note was uploaded on 11/16/2010 for the course PSYCHOLOGY 315 taught by Professor Lindasinex during the Fall '10 term at Indiana.

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Week+2+Thursday+Prenatal - Click to edit Master subtitle...

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