Forms by subduction, when two or more of earths tectonic plates converge. The denser plate is pushed under the lighter plate.
I believe that the best answer would be Dg. Based on the law of independent assortment, during meiosis, any allele from one trait can end up in the same gamete with any allele from another trait, Such that in this case the individual with genotype DdGg can produce DG, Dg, dG, or dg gametes, only applies to genes that are not linked on the same chromosome.
