an affinity or connection in a piece of music between tones, chords, or phrases, such that one part appears to repeat, to imitate, or to derive from the other, especially when perceived as an organising principle in the music; a zygonic relationship.
a zygote is the combined cell resulting from the union of sperm and egg. a zygote develops into an embryo. an embryo, a mass of cells with no recognizable human features, begins formation of a human body. after about seven or eight weeks, the embryo exhibits recognizable features such as a mouth and ears. at this stage, the developing human becomes known as a fetus. the word "zygote" is derived from the greek word "zygon" (yoke). medicinenet.com