Fragile-X syndrome
A) is a result of a point mutation in the reading frame of the FMR1 gene.
B) is a result of a mutant form of the FMR1 protein.
C) is phenotypically evident in heterozygous females.
D) results from an increase in the number of repeated CGG triplets in the promoter region of the FMR1 gene.
E) becomes less phenotypically evident in later generations.
Correct Answer:
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