<prompt> In humans, two closely linked genetic loci, each made up of two alleles, compose the histocompatibility locus HL-A. Paired first and second locus antigens are called haplotypes. The HL-A haplotypes separated by a semicolon of a childs parents are given below.Father 3, 25; 7, 12Mother 1, 3; 8, 9Assuming that no cross-over events have occurred, the childs histotype could be which of the following?1, 3; 7, 87, 12; 1, 33, 3; 7, 91, 25; 7, 12  <response>: In the question presented, the haplotypes of the father are 3, 25 and 7, 12 and the haplotypes of the mother are 1,3 and 8,9. A haplotype is composed of one allele-antigen-from the one gene of a pair and one allele from the other gene. Each child of this couple would have inherited one haplotype from each parent. Thus, possible offspring haplotypes are 1 3,25; 1,3; 2 3,25; 8,9; 3 7,12; 1,3; and 4 7,12; 8,9. 