I am always amazed when I see a couple who has been married for several years and they have adopted each others mannerisms and facial expressions. Sometimes it seems as though they underwent some crazy DNA experiment and were morphing into each other.
It's not that difficult to understand how it happens when you think about it. We all share little sayings, inside jokes, private stories, and even similar philosophies on life. After all, your spouse is the person you spend the most time with. Well ... in most cases. :)
These same traits, philosophies, and mannersims are transfered into our children as they are being brought up and maturing into adults. Although our children share our DNA and are predisposed to looking like us, there are many other characteristics they pick up from associating with us throughout their formative years. Some good .... Some bad.
Think about it for a second ...