The origin of animals is also one of the more mysterious episodes in the history of life. Changing from a single-celled organism to a trillion-cell collective demands a huge genetic overhaul. The intermediate species that might show how that transition took place have become extinct.Let's put that in layman's terms: "we're certain of our theory... we just don't have any real evidence." And considering science has yet to find even one -- just one -- example of a genetic mutation that ADDS information to the genome*, the idea that "trillion-cell collectives" are descended from single-cell organisms is without any scientific justification whatsoever.
“We’re just missing the intervening steps,” said Nicole King, an evolutionary biologist at the University of California, Berkeley.
In fact, let's call it what it is: faith.
(* mutations are essentially copying errors in DNA, where part of the sequence is incorrectly positioned or altogether dropped. Is such cases, information is lost to succeeding generations...)


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