Het just means a pair of mismatched genes, not half a morph. Het bel and het lesser are the same thing. You basically have two names for the same gene in that sense. Your dealing with the heterozygous form of the gene. But if im looking at a at the alleles sitting there i call them lesser genes not het bel. While there technically nothing incorrect about besides we have many ways to make a bel, so i see it as less accurate.