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We point out that New Physics can play an important r\^ ole in rescuing someof the Yukawa texture zero ans\" atze which would otherwise be eliminated bythe recent, more precise measurements of $V_{CKM}$. As an example, a detailedanalysis of a four texture zero ansatz is presented, showing how the presenceof an isosinglet vector-like quark which mixes with standard quarks, can renderviable this Yukawa texture. The crucial point is the nondecoupling of theeffects of the isosinglet quark, even for arbitrary large values of its mass.Comment: 13 pages, no figure

Yukawa textures, new physics, and nondecoupling