Single-cell organisms were already in existence 500 million years ago, with several thousand genes providing different cellular functions. Further developments seemed dependent on producing even more genes.
If so, a highly developed organism like a human should have resulted in several million genes yet the publication of the human genome showed us that a human only has around 25,000 genes – not many more than a fruit fly or a worm with approximately 15,000 to 20,000 genes.
It would appear that, over the last 500 million years, other ways to produce highly complex organisms have evolved. Evolution has simply found more efficient ways to use the genes already there.
But what could have made this possible?