But the terms can be confusing when it comes to understanding how a gene specifies a trait. This confusion comes about in part because people observed dominant and recessive inheritance patterns before anyone knew anything about DNA and genes, or how genes code for proteins that specify traits. The critical point to understand is that there is no universal mechanism by which dominant and recessive alleles act. Whether an allele is dominant or recessive depends on the particulars manuak the proteins they code for. The terms can also dt830 digital multimeter manual subjective, which adds to the confusion. The same allele can be considered dominant or recessive, depending on how you look at it. The dt830 digital multimeter manual allele, described below, is a great example.