Author Topic: A "Ghost" Haunts Our Genes  (Read 81 times)

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A "Ghost" Haunts Our Genes
« on: July 24, 2017, 06:12:15 AM »
There's a ghost in our genes, a humanoid ancestor who has left his trace in our saliva. Gross, I know, but here's the story on it.


Sign of a Mysterious Human Ancestor Has Been Found in Our Spit

MIKE MCRAE
22 JUL 2017

Quote
It's not enough for some people on this planet to say they have their mother's eyes – they can now claim to have their great, great, great… (a few thousand greats later) …great grandmother's saliva.

A variation on the gene for our spit's mucus shows signs of having been passed down from a distant ancestor. Not only is this gene unique among modern humans, it looks nothing like the one possessed by our Neanderthal or Denisovan cousins, leaving us to ask; just who did they get it from?

MUC7 is a gene that makes the long strings of protein called mucin, which gives our spit its thick, sticky quality.

Not all MUC7 genes are alike, with a repeating region of code marking out variations that could be useful in tracing back different lineages in our modern human population.

That was the plan for a team of researchers from the University of Buffalo in the US, who analysed the mucin-7 gene from more than 2,500 individual genomes from modern humans to see what secrets these differences might hold.

More at the link.....