what percentage of the population has identical twins
Twin The human twin birth rate in the United States, rose 76% from 1980 through 2009, from 18.9 to 33.3 per 1,000 births.[5]
Mary-Kate and Ashley Olsen Mary-Kate Olsen and Ashley Olsen (born June 13, 1986), also known as the Olsen twins collectively, are American fashion designers and former child actresses. The fraternal twins made their acting debut as infants playing Michelle Tanner on the television series Full House. At the age of six, Mary-Kate and Ashley Olsen began starring together in TV, film, and video projects, which continued to their teenage years. Through their company Dualstar, the Olsens joined the ranks of the wealthiest women in the entertainment industry at a young age.