This illustration pays homage to the famous drawing "Vitruvian Man" by Leonardo Da Vinci. In the drawing, Da Vinci portrays the proportions of man, or the "Canon of Proportions." The drawing is based on the correlations of ideal human proportions with geometric proportions described by the ancient Roman architect Vitruvius in his treatise "De Architectura." Vitruvius described the human figure as being the principal source of proportion among the classical orders of architecture. In this illustration, the figure of a man is replaced by that of a woman. Additional elements include a background depiction of molecular DNA and a background of the alphabetical symbols for the four nucleotides, guanine, cytosine, adenine and thymine, that compose the organic base pairs of the DNA double-helix chain.