Out-of-testis

Kaessmann H. Origins, evolution, and phenotypic impact of new genes. Genome Res. 2010;20(10):1313-1326. doi:10.1101/gr.101386.109
https://genome.cshlp.org/content/20/10/1313.full.pdf+html

image.png
Hypothesis of "out of testis"

Out of the testis: testis, compared with other organs, seem to play a more important role in permitting the nascent new genes to originate, and to subsequently adopt novel functions in other tissues by evolutionary time.