Figure 7.4 A mutant white-tailed deer. At the Seneca Army Depot in western New York State, a mutation for white hair appeared in the 1940s. Since that time, the white phenotype was protected while the normal brown phenotype was hunted. Over the subsequent 70 years, the white phenotype has come to compose about 25 percent of the population.
Photo by Syracuse Newspapers/Dick Blume/The Image Works.