Eleanor didn't actually have blood type O alleles. Genetically, Eleanor was blood type B.
) but had a Type O child (Baby 1), both parents must be heterozygous. IAicap I to the cap A-th power i Mrs. Smith Genotype: IAicap I to the cap A-th power i Family 2 (Jones): Mr. Jones is , Mrs. Jones is Mr. Jones Genotype: IBicap I to the cap B-th power i (Must be heterozygous if they had an O child, or IBIBcap I to the cap B-th power cap I to the cap B-th power Mrs. Jones Genotype: IAIBcap I to the cap A-th power cap I to the cap B-th power Step 2: Analyze Potential Offspring Family 1 ( IAicap I to the cap A-th power i IAicap I to the cap A-th power i ): Possible Genotypes: IAIAcap I to the cap A-th power cap I to the cap A-th power IAicap I to the cap A-th power i Result: They CAN have a Type O child. Family 2 ( IBicap I to the cap B-th power i IAIBcap I to the cap A-th power cap I to the cap B-th power ): Possible Genotypes: IAIBcap I to the cap A-th power cap I to the cap B-th power IAicap I to the cap A-th power i IBIBcap I to the cap B-th power cap I to the cap B-th power IBicap I to the cap B-th power i Result: They CANNOT have a Type O child. Step 3: Match Babies to Parents
What are the in the first generation? Is there a specific question number you are stuck on? lab activity blood type pedigree mystery answer key upd
allele, she could not pass one to Leo. Under normal rules, her children must be either Type A or Type B.
) in generation 3, both parents in generation 2 MUST carry the allele, even if they are Phenotype A or B. 3. Key Genetics Concepts Used To get the right answer, you must master these concepts: The ABO gene has three alleles: Codominance: IAcap I to the cap A-th power IBcap I to the cap B-th power are codominant. If you have both, you are Type AB. Recessive: is recessive. You need to be Type O. Genotype vs. Phenotype: Type A can be IAIAcap I to the cap A-th power cap I to the cap A-th power (homozygous) or IAicap I to the cap A-th power i Eleanor didn't actually have blood type O alleles
If a parent has Type A blood and a Type O child, that parent must be heterozygous ().
In the landscape of high school and introductory college biology education, few activities manage to blend deductive reasoning, genetic principles, and real-world medical application as seamlessly as the “Blood Type Pedigree Mystery” lab. This hands-on exercise challenges students to step into the role of genetic investigators, using the inheritance patterns of ABO blood types to solve a familial puzzle. The “answer key” for this lab, particularly in its updated form, is not merely a list of correct responses but a pedagogical tool that illuminates the core concepts of codominance, multiple alleles, and forensic genetics. Understanding the updated answer key reveals how the lab has evolved to address common student misconceptions and incorporate more rigorous analytical thinking. IAicap I to the cap A-th power i Mrs
If a parent is Type A, you often do not know immediately if they are $I^AI^A$ or $I^Ai$. You must look at their parents (the grandparents) or their other children to deduce the genotype.
While specific classroom datasets may vary, most "Blood Type Pedigree Mysteries" follow a similar logical trap. Below is a common dataset and the answer key logic used to resolve it.
Here are the solutions to the most common variations of the blood type pedigree mystery. Case A: The Hospital Mix-Up (The Classic) Can only produce Type A or Type B children. ( ). They cannot have an O or AB baby. Joneses (A