Tristan has a genetic disorder that results from an abnormality in the X chromosome,which becomes constricted and often breaks.His doctor informed Tristan's mother that he has:
A) fragile X syndrome.
B) XYY syndrome.
C) Turner syndrome.
D) Tay-Sach's disease.

Question

Quizplus · Accepted Answer

Fragile X syndrome is a genetic disorder that affects the X chromosome, resulting in the constriction and breakage of the chromosome. This condition is caused by a mutation in the FMR1 gene, which produces the fragile X mental retardation protein (FMRP). The absence of this protein can cause developmental delays, intellectual disability, and behavioral problems. XYY syndrome is a condition in which males have an extra copy of the Y chromosome, while Turner syndrome is caused by the absence or partial absence of the X chromosome in females. Tay-Sach's disease is a genetic disorder that occurs when the body is unable to break down a type of fat molecule called ganglioside, causing progressive neurological damage. This condition is caused by a mutation in the HEXA gene, which produces an enzyme called hexosaminidase A.

Tristan Has a Genetic Disorder That Results from an Abnormality