The answers to the clues below should suggest a certain holiday. What is it?

1. Male genetic characteristic
2. Ordinate in geometry
3. Family and community health organization
4. Provo, Utah school

Answers:

1. Y chromosome
2. Y-axis
3. YMCA (often called "The Y")
4. BYU (Brigham Young University)
              (also often called "The Y")

Holiday:

Fourth of July (Y is the fourth letter of JULY)