Fear and Social Anxiety, genetic link?

Is fear genitic or a result of experience. Research in May of 2008 shows that their is a genitic link to fear and aniexty. http://www.sciencedaily.com/releases/2009/03/090310161503.htm

Patti Wood, MA, Certified Speaking Professional
The Body Language Expert
Web- http://www.PattiWood.net
I have a new quiz on my YouTubestation. Check it out!
YouTube- YouTube - bodylanguageexpert's Channel