Question

which syndrome is characterized by a fragile tip on one of the x chromosomes? patau’s syndrome turner’s syndrome klinefelter’s syndrome fragile x syndrome

Explanation:

Fragile X syndrome is caused by a mutation in the FMR1 gene on the X chromosome, leading to a fragile site on the tip of the X chromosome. Patau's syndrome (trisomy 13), Turner's syndrome (missing an X chromosome in females), and Klinefelter's syndrome (extra X chromosome in males) do not involve a fragile tip on the X chromosome.

Answer:

Fragile X syndrome