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.
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.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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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.
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