Untangling spider’s webs: Largest-ever study of spider genetics shows orb weaver spiders do not share common origins
Emphasis: “…contrary to long-held popular opinion, the two groups of spiders that weave orb-shaped webs do not share a single origin.”
My comment: Dobzhansky (1964) attested to the problem that evolutionary theorists have continued to incorporate into their skewed perspectives on biologically-based cause and effect. “The notion has gained some currency that the only worthwhile biology is molecular biology. All else is “bird watching” or “butterfly collecting.” Bird watching and butterfly collecting are occupations manifestly unworthy of serious scientists!”
Obviously, comparisons cannot be made based only on morphological phenotypes.
If the two groups of spiders do not share a single origin, what species do share a common origin?
In the journal article, compositional homogeneity in all of the amino acids and taxa included was addressed in the context of morphological similarities and behavioral diversities. The differences in the behavior of spiders is thereby readily linked to nutrient-dependent pheromone-controlled amino acid substitutions and cell type differentiation manifested in in the morphology and receptor-mediated behavior of white-throated sparrows.
This “…novel and radical hypothesis of spider evolution…” does more than simply “…set the roadmap toward an until-now elusive spider tree of life.” It reasserts a fact that evolutionary theorists refuse to accept. “Olfaction and odor receptors provide a clear evolutionary trail that can be followed from unicellular organisms to insects to humans (Keller et al., 2007; Kohl, 2007; Villarreal, 2009; Vosshall, Wong, & Axel, 2000).” — Kohl (2012)
See also: Organismal biologists needed to interpret new trees of life. “…biologists will best advance science if they ensure their proposals are consistent with evolutionary trees that are well supported by molecular data, if they look for incompatible evidence and obvious difficulties, and if they evaluate alternative scenarios, as well as their preferred ones.”