Olympic legend Michael Johnson says a ‘superior athletic gene’ in the descendants of West African slaves means black American and Caribbean sprinters will command the sport at the London Games.
The Olympic gold medallist and BBC commentator said: ‘Over the last few years, athletes of Afro- Caribbean and Afro-American descent have dominated athletics finals.
‘It’s a fact that hasn’t been discussed openly before. It’s a taboo subject in the States but it is what it is. Why shouldn’t we discuss it?’