Question
ntMr. Stevan is suffering from haemophillia and cystic fibrosis. His father is heterozygous for cystic fibrosis. The probability of Stevan's sperm having recessive X- linked as well as autosomal allele is ?n nt(1) 1/4n nt(2) 1/16n nt(3) 1/2n nt(4) 1/8n