Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Turner syndrome ?
    ### Response:
    Turner syndrome is a chromosomal disorder that affects development in females. It is characterized by a person having one X chromosome in each cell (females without Turner syndrome have two X chromosomes in each cell). Signs and symptoms may include short stature; premature ovarian failure; a "webbed" neck; a low hairline at the back of the neck; and swelling (lymphedema) of the hands and feet.
    