PTC-tasting ability is a simple genetic trait governed by a pair of alleles, dominant T for tasting and recessive t for nontasting.Click to see full answer. In this regard, why is the ability to taste PTC dominant?It has the unusual property that it either tastes very bitter or is virtually tasteless, depending on the genetic makeup of the taster. The ability to taste PTC is often treated as a dominant genetic trait, although inheritance and expression of this trait are somewhat more complex.One may also ask, is PTC autosomal dominant? Being able to taste PTC is inherited in an autosomal dominant pattern. However, changes in the TAS2R38 gene only account for about 70-80% of PTC taste sensitivity. Beside above, is the ability to taste sodium benzoate dominant or recessive? If you taste “paper”, you are not a taster and are recessive. Sodium Benzoate – a dominant trait. Follow the instructions for PTC and Thiourea. A strong taste is dominant, a “paper” taste is recessive.Is PTC tasting incomplete dominance?Incomplete dominance would result in three phenotypes: non-taster, weak taster, or strong taster. This also means that there is no strength of the taster, TT & Tt both result in being able to taste the compound. From past studies, PTC tasting does not follow the typical Mendelian pattern, which is complete dominance.