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.
Within this definition there are variations of the color often refered to as slate grulla, silver grulla, olive grulla, black dun or wolf dun. The grullo color in the quarter horse is very rare and only about 0.7% of those registered in the quarter horse breed each year are grullo. Â© Roxanne Watson.