THAT THE CHILDREN OF DIVORCED PARENTS ARE MORE LIKELY, WHEN THEY GROW UP, TO GET DIVORCED THEMSELVES IS WELL KNOWN.

What is not known is how much this tendency is the result of nurture (with children manifesting, in later life, behaviors learned from their parents), and how much it is caused by nature (with children inheriting from divorced parents the sorts of genes that lead to marriage-breaking behavior). That genes are important has, though, now been confirmed by a study published in Psychological Scienceby Jessica Salvatore and Kenneth Kendler of the Virginia Institute for Psychiatric and Behavioural Genetics.

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Read more here - https://www.economist.com/science-and-technology/2018/02/01/genes-play-a-role-in-the-likelihood-of-divorce