Children suffering from _____ have an abnormal change in one of the genes on their X chromosome.
A)Fragile X syndrome
B)Down syndrome
C)Turner's syndrome
D)Xenophanes syndrome

Question

Quizplus · Accepted Answer

Fragile X syndrome is caused by an abnormality in the FMR1 gene on the X chromosome, which leads to a deficiency of the FMRP protein. This affects the development of the brain and can cause learning disabilities, behavioral and social problems, and physical characteristics such as a long face, large ears, and flat feet. Down syndrome is caused by the presence of an extra copy of chromosome 21. Turner's syndrome is caused by a missing or incomplete X chromosome. There is no such condition as Xenophanes syndrome.

Children Suffering from _____ Have an Abnormal Change in One