Gary has a chromosomal deletion and Heather has a chromosomal insertion. Which best describes which disease each may have? Gary might have DiGeorge syndrome and Heather might have Fragile X syndrome. Gary might have Kleinfelter’s syndrome and Heather might have Fragile X syndrome. Gary might have Fragile X syndrome and Heather might have Down syndrome. Gary might have DiGeorge syndrome and Heather might have Down syndrome.