Re: Anyone else see this in their family members?

With Epigenetics ... the fathers environment can influence which genes get activated in offspring.

In fact, in my family, it traces back to my great grandfather.  

Years ago, my mom mentioned that her grandfather was "a very nervous individual".  

So although we are exposed to our mothers epigenetic signals longer while in the womb, we get a set of instructions from our fathers as well in regards to which genes should be activated or deactivated.

Epigenetics—Sins of the Father

http://www.reasons.org/articles/epigenetics---sins-of-the-father

But ... you can also change gene activation yourself by improving your environment.  For example, meditation can deactivate stress related genes

Genomic counter-stress changes induced by the relaxation response

http://www.ncbi.nlm.nih.gov/pubmed/18596974

So, although parental signals are powerful, we can activate or deactivate genes by what we expose ourselves to