A student used a diagram to describe the inheritance of sex in humans. Which statements should she choose to fill boxes 1 and 2?
- Abox 1: all have an X chromosome; box 2: half have an X chromosome and half have a Y chromosome
- Bbox 1: all have a Y chromosome; box 2: half have an X chromosome and half have a Y chromosome
- Cbox 1: half have an X chromosome and half have a Y chromosome; box 2: all have an X chromosome
- Dbox 1: half have an X chromosome and half have a Y chromosome; box 2: all have a Y chromosome