qqqqqqq - micericksen

[ArchivalUser]

A 35-year-old woman, gravida 2, para 2, comes to the physician for preconceptional counseling. She has an 8-year-old daughter and a 5-year-old son. Both have mild developmental delay. The woman's brother, aged 32 years, has mild mental retardation and fragile X syndrome. Which of the following is the most likely cause of the developmental delay in this woman's children?
A. Chromosomal aneuploidy
B. Expansion of trinucleotide repeat
C. Imprinting
D. Uniparental disomy
E. X chromosome deletion

[ArchivalUser]

B is correct

[ArchivalUser]

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[ArchivalUser]

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[ArchivalUser]

what does uniparental disomy mean?

[ArchivalUser]

the answer is B. Expansion of trinucleotide repeat

I think I have seen your questions somewhere before. Will you please let us know your source? Have you got those any self assesment?

Thanks.