The Forelock and Balding

Some men have strong forelocks; when they start balding, as this man shows, you see the forelocks remain strong. The balding occurs around the forelock (A, B, C).  A man with a strong forelock often doesn’t look like they are balding because the forelock holds the frame to the face. When I transplant balding in a patient with the pattern shown below, I leave the forelock alone, realizing that sometimes, as this man grows older, he may lose the forelock, and then he will need it transplanted; however, in my experience, when men have strong forelocks to the age of 35, they are more prone to keep these forelock, regardless of the balding that may occur over time further back in the head.  These forelocks, I believe, have a genetic code different from the surrounding hair.