Fragile X syndrome
A)is caused by too many X chromosomes on a gene.
B)is similar to Lesch-Nyhan syndrome.
C)primarily affects males.
D)all of the above

Question

Fragile X syndrome
A)is caused by too many X chromosomes on a gene.
B)is similar to Lesch-Nyhan  syndrome.
C)primarily affects males.
D)all of the above

Quizplus · Accepted Answer

Fragile X syndrome is caused by changes in the FMR1 gene on the X chromosome, and it primarily affects males (although females can also be affected). It is not related to Lesch-Nyhan syndrome, and it does not involve an extra X chromosome. Therefore, the correct answer is choice C, which states that Fragile X syndrome primarily affects males.

Fragile X Syndrome