The simplest possible wind-energy turbine consists of three crucial parts: 1  Rotor blades-The blades are basically the sails of the system; in their simplest form, they act as barriers to the wind (more modern blade designs go beyond the barrier method).
Bay horses with allele AA but not A+ are bay, with a black mane, tail and points. Their bodies may be reddish-brown (as in standard, blood and mahogany bays), orange-red (as in copper bays) or yellowish (as in golden bays) and may have a black cast. Horses with allele A+ are light or wild-type bay.
Agouti: Restricts eumelanin, or black pigment, to points, allowing red coat color to show on body. No visible effect on red horses, as there is no black pigment to restrict. AA or Aa horse is a Bay, black hair shows only in points pattern (usually mane, tail, legs, sometimes tips of ears). aa: No agouti gene.