How do dominant and recessive traits impact genotype and phenotype?

The phenotype depends on the dominant allele. Only people with aa genotype will express recessive traits. Hope this helped!

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.