While it is often convenient to talk about a recessive allele or a dominant trait, dominance is not inherent to either an allele or its phenotype. Dominance is a relationship between two alleles of a gene and their associated phenotypes.
January 6th, 2012, 12:12 PM. Re: What octane gas is best to use for a two stroke outboard motor. If you're looking for solvents in the higher octane fuels to clean out the fuel system, the ethanol itself is a great solvent to loosen up crud in the fuel system.
I should clarify that I'm asking about putting 87 or 89 octane gas from Mobil/Shell/BP etc, not gas from a second rate station. So far what I have been doing is putting in half 93 octane and half 89 octane in order to get 91 octane since they don't sell straight 91 octane in my area (except for Sunoco). I have experienced fuel system problems with inferior gas with a previous vehicle which is why I switched to Mobil/Shell/BP etc.