Originally Posted by nelie
Actually it isn't bacterias/viruses that are spliced, at least not harmful bacteria but they are used due to their simple form of DNA and DNA replication. It is a bit complicated to explain but prokaryotic cells are used (and bacteria are a form of prokaryotes, not viruses). Eukaryotes (most non-microscopic life forms) have a lot of junk in their DNA, a large part of which does absolutely nothing. Prokaryotes are much simple and don't have this junk so they are used in gene splicing. Using prokaryotes, scientists are able to insert DNA and have that DNA replicated due to the simplicity of their DNA. The only DNA that is spliced into food products is the specific section created, none of the host DNA is spliced in.
Quote" Layla Parker-Katiraee holds a PhD in Molecular Genetics from the University of Toronto and a Bachelors degree in biochemistry from the University of Western Ontario. She is currently a Senior Scientist in Product Development at a California biotech company. All views and opinions expressed are her own. "
Her article explaining how E. Coli is used for gene splicing - she works for a biotech co. so I'd probably take her word for the fact that bacteria IS used to splice genes.
I think it's funny that just because we don't know what certain protein chains in the DNA are used for we think it's junk; you know, like tonsils were junk not very many years ago...