Dhanapalan, P.TANUVAS2018-07-252018-07-252009-09http://krishikosh.egranth.ac.in/handle/1/5810061883It is undeniable that, among the sciences, biology played a key role in the twentieth century. That role is likely to acquire further importance in the years to come. In the wake of the work of Watson and Crick, and the sequencing of the human genome, far-reaching discoveries are constantly being made. One of the central factors promoting the importance of biology is its relationship with medicine.en-USVeterinary ScienceBook chapter