Children of divorced parents are more likely to get separated when compared to those who grew up in two-parent families, and genetic factors may be to blame, according to a study.
The study analysed Swedish population registries and found that people who were adopted resembled their biological - but not adoptive - parents and siblings in their histories of divorce.
http://news.vcu.edu/article/Why_does_divorce_run_in_families_The_answer_may_be_genetics
Interesting study.
Thoughts?