What determines the size and shape of women's genitalia?

the DNA of that cell

fracture

u would probably have to use a microscope grid under a cell for size. and for shape, just draw a picture of what you see through a microscope.

squares and rectangles

Well, an obvious way to illustrate why is to look at examples. All vertebrates by definition have a backbone. However you will see all sorts of shapes and sizes simple due to diversity of the animal...