In my research I came across this article “Alternate Thinking ~ The Vampire Retrovirus.” Part article and part interview it once again posits that real vampires exist and they are created by inheriting a DNA mutating retrovirus from at least one parent. They suggest that, in an individual with this mutation, when exposed to a certain hormone (they don’t identify what hormone) or a high level of a certain hormone during puberty they “awaken” or become fully a vampire.
The authors (Tim, Izidari and Danica. No last names given.) revisit Steve Leighton’s notion that vampirism is a HERV or Human Endogenous Retrovirus. They provide a more cogent presentation of this theory and present the argument that because the human genome has not been completely mapped it is impossible to rule out their theory.
The most compelling part of their argument is the fact that The Human Genome Project has not mapped at least eight percent of the 23,000 human genes. One of the specific areas that have yet to be fully investigated are the DNA heterochromatic regions.
Heterochromatin has been associated with several functions, from gene regulation to the protection of the integrity of chromosomes according to Grewal and Jia in “Heterochromatin revisited”. in Nature Reviews Genetics. That article goes on to state “If evolution makes sense only in the context of the regulatory control of genes, we propose that heterochromatin, which is the main form of chromatin in higher eukaryotes, is positioned to be a deeply effective target for evolutionary change. Future investigations into assembly, maintenance and the many other functions of heterochromatin will shed light on the processes of gene and chromosome regulation.”
This is where they authors believe that the proof of vampirism will eventually be found. A genetic mutation caused by an inherited, retrovirus induced, defect causing an alternate evolutionary path for humans who have this anomaly.
This is an excellent theory but remains at this time, like all other serious theories of vampirism, impossible to prove or disprove. In my search for answers I am still basically at square one.
(p.s. – Jen has forgiven me. I am free to blog but she has negotiated the right to pre-approval if she is mentioned in my posts.)