The article says the Y chromosome was based on his father and his 1/2 brother. But maybe he was bi.
We like to think that we inherit half of our chromosomes from each parent, but we don’t. Many times it may be a 60/40 split or even a 90/10 split or anything in between 1 and 100.
Went to school with a guy who was the spitting image of his dad made over. His brother looked completely different.
After 500 years of generations from a father and a half brother, I doubt there are many ‘Leonardo Da Vinci’ chromosomes left in the mix....................