About half of the individuals with savant syndrome also display fragile X syndrome. autism. schizophrenia. fetal alcohol syndrome.
Added by George F.
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Savant syndrome is a condition in which a person with a developmental disability, such as autism, has one or more areas of expertise, ability, or brilliance that are in contrast with the individual's overall limitations. Show more…
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Relate the clinical facts of Fragile X syndrome or Marin-Bell syndrome as causes of inherited intellectual disability.
Adi S.
Fragile X syndrome, caused by a change in the FMR1 gene, is the most common form of intellectual disability. In patients with this syndrome, a small part of the gene is repeated several times in one area of the chromosome. This defect in the gene makes the body unable to produce adequate amounts of a protein needed for normal brain functioning. In males, this syndrome causes a moderate intellectual disability, and in females, a mild intellectual disability. A family that exhibits Fragile X syndrome is shown in the pedigree. In the pedigree, squares represent males and circles represent females. Shaded symbols represent a person with the disorder. Which of the following correctly predicts the outcome if offspring 11 mated with a homozygous normal female, based on the inheritance pattern shown in the pedigree? The male offspring would exhibit Fragile X syndrome because Fragile X is an X-linked recessive trait. The female offspring would exhibit Fragile X syndrome because Fragile X is a recessive autosomal trait. None of their offspring would exhibit Fragile X syndrome because Fragile X is an X-linked dominant trait. Both the male and female offspring exhibit Fragile X syndrome because Fragile X is a dominant autosomal trait
Madhur L.
The second-leading genetic cause of mental retardation is Fragile $\mathrm{X}$ Syndrome, named for the fragile appearance of the tip of the X chromosome in affected individuals. One in 1500 males are affected worldwide, with no ethnic bias. a. In a sample of 10,000 males, how many would you expect to have Fragile X Syndrome? b. For a sample of 10,000 males, use the Poisson approximation to the binomial distribution to determine the probability that more than 7 of the males have Fragile $X$ Syndrome; that at most 10 of the males have Fragile X Syndrome.
Discrete Random Variables
The Poisson Distribution
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