fFOLLOW UP RESEARCH ON ERVs:
This is from an evolution friendly site, for those who think anything from creation sites is defective (though my experience through years of research says just the opposite):
Human endogenous retroviruses: from infectious elements to human genes.
de Parseval N1, Heidmann T.
Author information
- 1Unité des Rétrovirus Endogènes et Eléments Rétroïdes des Eukaryotes Supérieurs, UMR 8122 CNRS, Institut Gustave Roussy, Villejuif, France.
Abstract
Mammalian genomes contain a heavy load (42% in humans) of retroelements, which are mobile sequences requiring reverse transcription for their replicative transposition. A significant proportion of these elements is of retroviral origin, with thousands of sequences resembling the integrated form of infectious retroviruses, with two LTRs bordering internal regions homologous to the gag, prt, pol, and env genes. These elements, named endogenous retroviruses (ERVs), are most probably the proviral remnants of ancestral germ-line infections by active retroviruses, which have thereafter been transmitted in a Mendelian manner. The complete sequencing of the human genome now allows a comprehensive survey of human ERVs (HERVs), which can be grouped according to sequence homologies into approximately 80 distinct families, each containing a few to several hundred elements. As reviewed here, strong similarities between HERVs and present-day retroviruses can be inferred from phylogenetic analyses on the reverse transcriptase (RT) domain of the pol gene or the transmembrane subunit (TM) of the env gene, which disclose interspersion of both classes of elements and suggest a common history and shared ancestors. Similarities are also observed at the functional levels, since despite the fact that most HERVs have accumulated mutations, deletions, and/or truncations, several elements still possess some of the functions of retroviruses, with evidence for viral-like particle formation, and occurrence of envelope proteins allowing cell-cell fusion and even conferring infectivity to pseudotypes. Along this line, a genomewide screening for human retroviral genes with coding capacity has revealed 16 fully coding envelope genes. These genes are transcribed in several healthy tissues including the placenta, three of them at a very high level. Besides their impact in modeling the genome, HERVs thus appear to contain still active genes, which most probably have been subverted by the host for its benefit and should be considered as bona fide human genes. Some of their characteristic features and possible physiological roles, as well as potential pathological effects inherited from their retroviral ancestors are also reviewed.
----------As can be seen by the words in green, above, the topic of ERVs is highly speculative at this time. Therefore it seems obvious, to me at least, that any "proof" for evolution that they purportedly give is also highly speculative.
"Suggest a common ancestor....a
ppear to...most probably....can be inferred....possible...." are nice words for an hypothesis but are not adequate to make a case for actual scientific evidence of anything.
Here is a creationist's perspective on ERVs.:
Here is another thing that seems not to be based on real scientific data...
The evolutionists are saying we are related to chimps because 14 of our 98,000 ERVs are located where theirs are. Aside from the point made in the vid that this is a minuscule percentage, who is saying we came from chimps anyway? Not even the evolutionists say that. Of course they co exist with us! Apparently we are supposed to use our imaginations to draw lines to the invisible dots leading to the invisible, i.e. "missing links" (really, I believe, non existent) ancestors of the chimp. Again, I don't believe that is science at all, just fanciful theories presented as facts.