Most of this DNA is no longer functional, but some may have brought with them novel genes that are important in human development.
The testis was chosen for these studies as it represents a viable source for the identification of novel genes.
Some of them are pseudogenes, while others appear to be related to novel genes.
The remaining 34% did not match Release 3 annotations, leading to the possibility that some or all of these may represent novel genes.
For without the fresh ideas and novel genes proposed by winter's books and catalogues, next spring's garden would offer nothing new.
For one thing, all of these genomes have turned out to contain far more novel genes than had been expected.
In plants, they seem to have spread out using different mechanisms, like gene duplications, evolution of novel genes etc.
Perhaps most significant was the addition of 240 completely novel genes not previously included in the Arabidopsis genome annotation.
Thus novel genes flow from either side into the hybrid zone.