A 5-year-old boy presents with developmental delay, intellectual disability, and macro-orchidism. Genetic testing reveals an expansion of CGG trinucleotide repeats in the FMR1 gene. What is the most likely mode of inheritance for this condition?
✓ Correct Answer: Option C
The symptoms (intellectual disability, macro-orchidism) and genetic cause (CGG repeat expansion in FMR1 gene) are characteristic of Fragile X syndrome, which is inherited in an X-linked recessive pattern.