Lab Activity Blood Type Pedigree Mystery Answer Key Upd ❲Popular | SECRETS❳
If you are a teacher, you want students to discover the answer, not copy it. Here is a scaffolding strategy using this key:
Only reveal the UPD answer key after students have submitted their initial hypothesis.
Discuss the real-world implications: In actual paternity testing, blood type is only presumptive; DNA is definitive.
To help you update your own lab manual, here is a clean answer key format for the most likely questions:
Q1: Draw the pedigree for a family where Mom is Type A (heterozygous), Dad is Type O. They have 3 children: Type A, Type O, and Type A.
A1: (Diagram: circle Mom (IAi), square Dad (ii). Children: circle (IAi), square (ii), circle (IAi).)
Q2: Could a Type AB father and a Type A mother have a Type O son? Explain.
A2: No. Type AB father (IAIB) has no i allele to pass. Type O requires genotype ii. Therefore impossible. lab activity blood type pedigree mystery answer key upd
Q3: In the "Hospital Mix-Up" version:
Note: There are dozens of versions of this lab on Teachers Pay Teachers, Lab-Aids, and Flinn Scientific. The following is based on the most common 2023-2024 "UPD" (Updated) version circulating in high school biology curricula.
Scenario:
The Pedigree Chart Provided:
Question: Which claimant(s) could be the biological child of the deceased father (Type AB) and the mother (Type O)?
Before revealing the answer key, we must align on the updated (UPD) genetic rules. The old keys sometimes ignore the cis-AB or Bombay phenotype, but for standard high school level, we stick to the core rules: If you are a teacher, you want students
| Blood Type (Phenotype) | Possible Genotypes | Antigen on RBC | Antibody in Plasma |
| :--- | :--- | :--- | :--- |
| A | IAIA or IAi | A antigen | Anti-B |
| B | IBIB or IBi | B antigen | Anti-A |
| AB | IAIB | A and B antigens | None |
| O | ii | None (H antigen only) | Anti-A and Anti-B |
Critical Rule for Pedigrees:
If you are a teacher, you want students to discover the answer, not copy it. Here is a scaffolding strategy using this key:
Only reveal the UPD answer key after students have submitted their initial hypothesis.
Discuss the real-world implications: In actual paternity testing, blood type is only presumptive; DNA is definitive.
To help you update your own lab manual, here is a clean answer key format for the most likely questions:
Q1: Draw the pedigree for a family where Mom is Type A (heterozygous), Dad is Type O. They have 3 children: Type A, Type O, and Type A.
A1: (Diagram: circle Mom (IAi), square Dad (ii). Children: circle (IAi), square (ii), circle (IAi).)
Q2: Could a Type AB father and a Type A mother have a Type O son? Explain.
A2: No. Type AB father (IAIB) has no i allele to pass. Type O requires genotype ii. Therefore impossible.
Q3: In the "Hospital Mix-Up" version:
Note: There are dozens of versions of this lab on Teachers Pay Teachers, Lab-Aids, and Flinn Scientific. The following is based on the most common 2023-2024 "UPD" (Updated) version circulating in high school biology curricula.
Scenario:
The Pedigree Chart Provided:
Question: Which claimant(s) could be the biological child of the deceased father (Type AB) and the mother (Type O)?
Before revealing the answer key, we must align on the updated (UPD) genetic rules. The old keys sometimes ignore the cis-AB or Bombay phenotype, but for standard high school level, we stick to the core rules:
| Blood Type (Phenotype) | Possible Genotypes | Antigen on RBC | Antibody in Plasma |
| :--- | :--- | :--- | :--- |
| A | IAIA or IAi | A antigen | Anti-B |
| B | IBIB or IBi | B antigen | Anti-A |
| AB | IAIB | A and B antigens | None |
| O | ii | None (H antigen only) | Anti-A and Anti-B |
Critical Rule for Pedigrees: