Any genetic character whose inheritance is controlled by a single gene. The inheritance of a single-gene character follows Mendel's laws of inheritance. Single-gene resistances
This term covers both vertical resistance and genetically engineered resistance. Neither kind of resistance is likely to be stable. Sisal
See: Agave sisalana. Skewed distribution
A normal or Gaussian distribution that is slanted towards one extreme or the other. Smuts
Plant parasitic fungi of the Order Ustilaginales, so called because they usually produce large quantities of black spores that resemble soot.
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