Provided is a method for determining whether a feline is infected with pathogenic Feline Infectious Peritonitis Virus or Feline Enteric Infection Virus. The network includes a plurality of switches and links between the switches. The predistorter uses a polynomial approach based on the well-known Volterra series to model the distortion function. Still further provided by the invention are methods for producing cotton plants by crossing the cotton variety 11R136B2R2 with itself or another cotton variety and plants and seeds produced by such methods.