The primary genetic factor governing standard Deryni inheritance seems to be a simple sex-linked dominant carried on
the X chromosone ( designated X ' ). Thus, Deryniness per se is determined by the maternal line-not the paternal-and a male
child displaying the Deryni capabilities must have had at least a heterozygous (X ' X) Deryni mother.
X ' X - XY
X ' Y
Only on X ' factor is necessary for the individual to display the full spectrum of Deryni capabilities;
![Healing [click for larger]](/imagelib/sitebuilder/misc/show_image.html?linkedwidth=actual&linkpath=https://thederynichronicles.tripod.com/sitebuildercontent/sitebuilderpictures/healing.jpg&target=tlx_new)
