Hathaway provides an illustration of this in Path Dependence and the
Law: The Course and Pattern of Legal Change in a Common Law System (http://www.bu.edu/law/faculty/papers/pdf_files/HathawayO081000.pdf)
by applying the mechanism of path dependence, derived from evolutionary
biology, to model the process of change under a common law legal process.
second application of biology to law is to use biological descriptions
to help design more effective legal mechanisms. Owen D. Jones provides
an interesting illustration of what this process might do in Evolutionary
Analysis in Law: An Introduction and Application to Child Abuse, 75
North Carolina Law Review 1117 (1997). Professor Jones is the founder
of SEAL, the Society for Evolutionary Analysis in Law (http://www.law.asu.edu/HomePages/Jones/seal/default.htm).
third application of biology to law is to use biological description
to develop a physical basis for law. That is the approach taken in the
Biological Basis of Law.
Donald Elliott, 1997, Law and Biology: The New Synthesis? 41 St. Louis
University Law Journal 576.