Are Dilip Kumar and SRK related?

On more occasions than one, Shah Rukh has said that he and Dilip Kumar share a father-son relation. It is interesting to note the starking resemblance between the two. On several occasions SRK himself has been taken aback by his resemblance to one of Dilip Kumar's younger days pics. Dilip saab and SRK's father have been great friends. As a child, SRK has visited Dilip saab's house with his parents. There have been several occasions when Dilip saab has expressed how much he loves SRK. Both are great actors of their respective times and it is seer co-incidence that they resemble each other so much.