A sophisticated answer key will note rare phenomena, such as the Bombay phenotype (where a person inherits ABO alleles but lacks the H antigen, appearing as type O even if genotypically A or B). While not central to the mystery, this note teaches that real-world genetics has outliers.
This activity reconstructs a family pedigree using ABO and Rh blood type data, then deduces probable genotypes and inheritance patterns to identify the biological relationships in a mystery case. The goal is to apply Mendelian genetics, understand codominance (AB), and use Rh inheritance to resolve ambiguities. lab activity blood type pedigree mystery answer key upd