The Blood Type Pedigree Mystery is more than just a puzzle; it is an exercise in deductive reasoning. By understanding the interaction of multiple alleles and utilizing pedigree charts, students can definitively prove or disprove biological relationships. In the case of the standard mystery scenario, the presence of a Type B child to Type A and O parents serves as the "smoking gun," revealing the fraudulent claim and solving the mystery.

What are the of the parents and babies listed in your specific worksheet?

as a daughter of Joseph and Rita. In many versions of this mystery, Jane's Type O blood reveals she is either adopted or provides the key that Joseph must carry an is A+: Since Rita is Rh- ( ), the Rh+ allele ( ) must come from Joseph. Joseph is Type B+ with the genotype . 2. Identifying the Inheritance Patterns The lab tracks two distinct genetic traits:

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