[" Lesch Nyhan disease is an X-linked recessive "],[" disorder that causes neurological damage in human "],[" beings.A survey of "500" mates from a caucasion "],[" population revealed that "20" were effected with this "],[" disorder.What is the frequency of the normal allele "],[" in this population? "],[[" (1) "9.6," (2) "0.8],[" (3) "0.096," (4) "96]]