What are holandric genes?

by Ron
(Pa)

This is incorrect - it has been disproven.
"A widely known holandric gene is the one that conditions hypertrichosis pinnae (hair in the ears), a phenotype inherited from fathers to sons through the Y chromosome."
Here is a reference link:
http://www.nature.com/ejhg/journal/v12/n12/full/5201271a.html

Note of editor: Thanks, Ron, for your contribution. We have changed the information on the page. Your remarks are welcome.