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.
Use only what the ownerâs manual specifies. If your car is designed to run on regular gasoline, or 87 octane. If your manual specifies higher octane fuel, such as 89, 91, or 93 use the closest octane rating available at your gas station without going below the specified rating in your manual.