A Genomic Condition That May Be Responsible for Some Forms

Multiple Choice

A genomic condition that may be responsible for some forms of fragile -X syndrome, as well as Huntington disease, involves _.

A) plasmids inserted into the FMR -1 gene
B) multiple breakpoints fairly evenly dispersed along the X chromosome
C) single translocations in the X chromosome
D) various lengths of trinucleotide repeats
E) multiple inversions in the X chromosome