There are polarities as well as molecular weight differences between aspartic and phenylalanine: asapartic acid has a polar, acidic side chain as well as a smaller molecular weight; phenyalanine has a nonpolar side chain and a larger molecular weight. Based on the Rf values you obtained for these two amino acids in the solvent employed, which amino acid migrated faster as well as which of these two properties influenced the rate of migration?