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.
the genetics of bay horses. Bay horses must have at least one E+ allele at the extension locus (i.e. bay horses are of genotype E+E+, E+e or E+ea at this locus). This allele causes the production of the black eumelanin pigment that occurs in black, bay and brown horses, and the colors derived from them (e.g. buckskin).