Question: What type of mutation is fragile x syndrome?
Disambiguated questions and answers: question: What gene is typically mutated in fragile x syndrome?
What type of mutation causes a nucleotide repeat disorder like fragile x syndrome?
What type of mutation, occurring in fragile x syndrome, is characterized when the likelihood of mutant phenotype expression is a function of the number of copies of said mutation?
answer: FMRP translational regulator 1
fragile X mental retardation 1
FRAXA
POF
FMRP
FMR1
POF1
triplet repeat expansion
triplet repeat
trinucleotide repeat expansion
dynamic mutation
dynamic
Natural Questions answer: FMR1 mutation (from the Wikipedia article "Fragile X syndrome")