Lab Activity Blood Type Pedigree Mystery Answer Key Upd Online

| Claimant | Claimed Blood Type | Possible Biological Child? | Explanation | | :--- | :--- | :--- | :--- | | Claimant 1 | Type A | YES | Genotype AO – Received A from father, O from mother. | | Claimant 2 | Type B | YES | Genotype BO – Received B from father, O from mother. | | Claimant 3 | Type O | NO | Genotype OO would require father to donate an O, but AB father has no O allele. |

Final Verdict: Claimants 1 and 2 are possible biological children. Claimant 3 is excluded.

For quick classroom reference, here is the clean answer key for the standard "Blood Type Pedigree Mystery Lab."

Case: Father (AB) x Mother (O)

Possible children: Type A or Type B only.

Excluded children: Type AB or Type O.

Claimant results:

Genotype assignments:

Pedigree reasoning: The AB father cannot contribute an i allele; therefore O child impossible.

When grading the "Blood Type Pedigree Mystery," teachers consistently see three errors. Here’s the UPD correction guide. lab activity blood type pedigree mystery answer key upd

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:

Moreover, the key often includes “common errors” notes, such as: “Mistake: assuming a Type A parent must be AA. Always consider the heterozygous possibility.” This transforms the answer key into a self-guided tutorial.