Even by mid century contradictions to evolutionary expectations were becoming obvious in serological tests. As J.B.S.Haldane explained in 1949:
Now every species of mammal and bird so far investigated has shown quite a surprising biochemical diversity by serological tests. The antigens concerned seem to be proteins to which polysaccharides are attached. We do not know their functions in the organism, though some of them seem to be part of the structure of the cell membrane. I wish to suggest that they may play a part in disease resistance, a particular race of bacteria or virus being adapted to individuals of a certain range of biochemical constitutions, while those of other constitutions are relatively resistant.
Indeed these polysaccharides, or glycans, would become rather uncooperative with evolution. As one recent paper explained, glycans show “remarkably discontinuous distribution across evolutionary lineages,” for they “occur in a discontinuous and puzzling distribution across evolutionary lineages.” This dizzying array of glycans can be (i) specific to a particular lineage, (i) similar in very distant lineages, (iii) and conspicuously absent from very restricted taxa only. In other words, the evidence is not what evolution expected.
Here is how another paper described early glycan findings:
There is also no clear explanation for the extreme complexity and diversity of glycans that can be found on a given glycoconjugate or cell type. Based on the limited information available about the scope and distribution of this diversity among taxonomic groups, it is difficult to see clear trends or patterns consistent with different evolutionary lineages. It appears that closely related species may not necessarily share close similarities in their glycan diversity, and that more derived species may have simpler as well as more complex structures. Intraspecies diversity can also be quite extensive, often without obvious functional relevance.
So is the evidence a problem for evolution? No, of course not. For as the paper explains:
Here we discuss the significance of this remarkable diversity, mindful of the oft-repeated adage of Dobzhansky's that “nothing in biology makes sense, except in the light of evolution.”
And so we are back to that “another story” again. This non scientific claim is, for evolutionists, the gift that just keeps on giving. It seems any evidential problem is easily disposed of with this handy truism. It is like a chant for evolutionists. Say it enough times and evolution is, as they say, a fact, in spite of the evidence. Here is how another, slightly more self-conscious, paper put it:
While we would certainly agree with the statement that “nothing in glycobiology makes sense, except in the light of evolution”, we must also realize that evolution only occurred once and that evolution does not follow well-defined rules. This situation is somewhat alleviated by the fact that after lineages diverge, more often than not they remain separated for good and, thus provide researchers with large numbers of iterations (“pseudo samples”) for which evolutionary processes have occurred independently. The study of these divergent lineages provides a good opportunity to elucidate evolutionary mechanisms.
Even in the worst of circumstances this favorite tenet of evolutionary thought is serviceable. It can always do the heavy lifting when necessary.
Religion drives science and it matters.