Yes, I remember hearing that article and I found it fascinating. We're learning new things about DNA every day. For instance, what we once considered junk DNA may actually contain a new form of RNA that regulates expression of extron genes.
As for this hurting evolution, it really doesn't. Understand that Mendelian principles, at least the ones in question, do not apply to most genes. Rarely is one trait coded by one gene, in which there is a recessive and dominant form. Usually a multitude of genes with various allele forms influence each other and work together, sometimes even hindering the expression of each other.
This doesn't impact Mendels most important rules, the Law of Segregation and Independant Inheritance. Just for kicks, scientists have already found counter-examples to each law (such as non-disjunction and linkage groups).
™ Version 4.2