Those who are chasing DNA and exploring genetic inheritances might be interested in the latest blog entry by renowned Irish genealogist, John Grenham. John's unique style, great curiosity and fascinating insights always make for interesting reading, whether or not your heritage is Irish. This blog is no exception.
https://www.johngrenham.com/blog/2017/04/03/dormant-abeyant-forfeited-and-extinct/
REMEMBER to check out the GSV's DNA Discussion Circle - for Members. See the website here https://dev.gsv.org.au/special-interest-groups/dna-discussion-circle