Lab Activity Blood Type Pedigree Mystery Answer Key Upd

Below is a standard laboratory pedigree mystery scenario involving three generations of a family. Students are tasked with determining missing phenotypes and genotypes to solve a hospital mix-up or paternity mystery. The Mystery Scenario

Conclusions:

In the sterile glow of the Neo-Gene Lab, Dr. Aris Thorne stared at the digital pedigree chart glowing on his tablet. The family tree belonged to the Montgomerys, a lineage of old wealth, but it was currently telling a story of biological impossibility.

The Rh factor (+ or -) follows simple Mendelian inheritance. The positive allele ( ) is completely dominant over the negative allele ( −negative Phenotype to Genotype Mapping: Type A: 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 (Heterozygous) Type B: IBIBcap I to the cap B-th power cap I to the cap B-th power (Homozygous) or IBicap I to the cap B-th power i (Heterozygous) Type AB: IAIBcap I to the cap A-th power cap I to the cap B-th power (Codominant) Type O: (Recessive) Rh+: ++positive positive +−positive negative Rh-: −−negative negative The Mystery Scenario (Standard Setup) lab activity blood type pedigree mystery answer key upd

To arrive at the correct answer key, students must recall three core principles:

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.

Because Family 1 parents are both IAicap I to the cap A-th power i , they can produce an (Type O) child ( from mother + from father). Baby 2 (Type AB) belongs to Family 2. Because Mrs. Jones is ABcap A cap B IAIBcap I to the cap A-th power cap I to the cap B-th power ), she can pass on either an allele, making it possible to have an ABcap A cap B V. Final Answers (Answer Key) Which baby belongs to the Smith Family? Answer: Baby 1 (Type O) Reasoning: IAicap I to the cap A-th power i IAicap I to the cap A-th power i can produce an (Type O) child. Which baby belongs to the Jones Family? Answer: Baby 2 (Type AB) Reasoning: Mrs. Jones ( IAIBcap I to the cap A-th power cap I to the cap B-th power ) can produce an AB child, whereas the Smiths cannot. Pedigree Diagram Explanation: Below is a standard laboratory pedigree mystery scenario

Genotype must be IBicap I to the cap B-th power i . Proof: Like Arthur, she must pass a recessive allele to her Type O son, Charles. Generation II (Parents and Uncles/Aunts) Charles Harrington (Father - Type O): Genotype is .

This comprehensive guide serves as the ultimate answer key and instructional resource for the , updated with advanced troubleshooting tips, clear genetic charts, and step-by-step solutions. 1. Core Genetics Review

A wealthy philanthropist has died under suspicious circumstances. The will reveals that a large inheritance is to be split among biological children only. Three individuals come forward claiming to be the long-lost offspring of the deceased. However, the deceased’s known blood type (often Type O or Type AB) and the known blood types of the surviving spouse (or a presumed parent) create a genetic puzzle. Aris Thorne stared at the digital pedigree chart

The Mystery Solved: Eleanor only carries alleles and cannot pass an IAcap I to the cap A-th power IBcap I to the cap B-th power

Before revealing the answer key, we must align on the updated (UPD) genetic rules. The old keys sometimes ignore the or Bombay phenotype , but for standard high school level, we stick to the core rules:

Based on blood type analysis, the thief is typically identified as (in most standard versions of this lab).

Depending on your course level (General Biology vs. AP/Advanced Genetics), the answer key accommodates two distinct conclusions for Leo’s true identity: