Esempi
This number can be compared with the 40,000 genes thought to be present in the human genome .
There are four types of changes that may affect the order of the genes on the bacterial genome .
The process is repeated using every gene within every genome as the starting gene.
The genomic DNA from all cases is mixed together in a pool and that of controls is mixed in the other pool.
Almost nothing is known about the evolution and the genomic impact of fish retroelements.