Activity Blood Type Pedigree Mystery — Lab

Here’s a short draft for a lab activity story titled Title: The Heirloom Type

“If Julian is truly Ana’s son,” Maya said slowly, “and Ana was AB at the time of his birth, Julian cannot be type O.”

Dr. Reeves handed them a sealed evidence bag. Inside: a worn hospital wristband labeled lab activity blood type pedigree mystery

“Easy,” said Leo. “If Ana and Carlos are both type A, they can’t have a type O child unless they’re both heterozygous AO.”

The estate granted Julian a share—not because of the blood type pedigree alone, but because the mystery of the pedigree led them to ask the right questions. And in forensics, asking the right question is half the solution. Would you like a printable student worksheet to accompany this story, including data tables and analysis questions? Here’s a short draft for a lab activity

When a rare blood type surfaces in a family pedigree, four lab partners must use serology and deductive reasoning to determine whether a long-lost relative’s inheritance claim is truth—or a clever lie. Story Draft

“Found in the estate papers,” she said. “Turns out Ana wasn’t AB at all. She was O negative her whole life. The AB was a transcription error made decades ago.” “If Ana and Carlos are both type A,

The late afternoon light slanted through the lab windows as Maya pinned the last pedigree chart to the corkboard. “Okay, team,” she announced, uncapping a set of blood typing trays. “This is the Martinez family case.”