For ten points, name this theory that posits that some cellular organelles began as englufed prokaryotes in a mutualistc relationship with their host cell.
A notable example supporting this idea is the aptly named mixotricha paradoxa, which is asserted by some to have five genomes. One unresolved issue with this theory is that the mechanism of gene flow from the namesake species to a host is not well understood, but the numt process may explain part. First introduced by Andreas Schimper, this theory was popularized by Lynn Margulis, and explains the 70s ribosomes and circular DNA found in mitochondria and chloroplasts. For ten points, name this theory that posits that some cellular organelles began as englufed prokaryotes in a mutualistc relationship with their host cell.
A notable example supporting this idea is the aptly named mixotricha paradoxa, which is asserted by some to have five genomes.
{endosymbiosis} (accept word form like {endosymbiotic} theory)