Are Tiafoe twins identical or fraternal?

our TFO twins identical or fraternal Francis has a fraternal twin brother Franklin who played tennis last year for Salisbury University in Maryland tennis Beginnings Francis senior was the maintenance worker for the junior tennis champion Center in College Park MD near Washington what gender is most common in identical twins identical monozygotic twins happen when a single egg zygote is fertilized the egg then divides in two creating identical twins who share the same genes identical twins are always the same sex so if your twins are identical you'll have two girls or two boys [Music] can identical twins be a boy and a girl in 99.9 percent of cases boy girl twins are non-identical however in some extremely rare cases resulting from a genetic mutation identical twins from an egg and sperm which began as male X Y can develop into a male female pair