Lab Activity: Blood Type Pedigree Mystery — Answer Key & Teacher Guide Activity Overview
allele. Both Mr. and Mrs. Jones fit this criteria perfectly. 3. The Smith Family Investigation : Mr. John Smith (Type A+) Mrs. Mary Smith (Type B+)
The key clues were the O child (both parents must carry i) and the AB child (parents provide IA and IB), plus Rh− children requiring both parents to carry d. Combining ABO and Rh inheritance pinpoints the mystery individual as genotype IAi, dd (phenotype A−). lab activity blood type pedigree mystery answer key upd
Assume pedigree labels: Grandparents (G1, G2), Parents (P1, P2), Children (C1–C4). Observed phenotypes:
Last updated: May 2026 – Verified against common high school lab manuals. Lab Activity: Blood Type Pedigree Mystery — Answer
The premise of the "Blood Type Pedigree Mystery" typically involves a scenario where a child’s parentage is in question, or a family medical history needs to be established based on blood genetics.
If your lab uses chemical simulations (such as using simulated blood with synthetic anti-A and anti-B sera), ensure students record their agglutination data accurately before they start drawing the pedigree. Jones fit this criteria perfectly
Positive (+) is dominant; negative (-) is recessive. Two (+) parents can have a (-) child, but two (-) parents can never have a (+) child. 🧩 Common Lab Scenario Solutions Scenario A: The Switched at Birth Mystery Usually involves two sets of parents and two babies.
This comprehensive guide walks you through the entire lab, from the initial crime scene to the final deduction. We'll demystify the genetics involved, provide a detailed step-by-step solution guide, and even offer a completed answer key to support educators or help students check their understanding.
The updated answer key serves as more than a grading tool. It is a scaffold for metacognition. When students compare their reasoning to the key, they learn to:
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