Lab Activity Blood Type Pedigree Mystery Answer Key Upd [new]

Step 1: Start with the RecessivesThe easiest way to begin solving the mystery is to look for individuals with Type O blood. Because Type O is recessive, their genotype must be OO. Write this down immediately.

to solve a "whodunnit" scenario. The activity typically centers on a family—often featuring a wealthy couple named Joseph and Rita—to identify a thief among their potential blood relatives. Course Hero The primary answer to this lab mystery is that the thief is Shayla , who is identified because her A+ blood type attached earlobes match the evidence found at the crime scene. Course Hero 1. Identify inheritance patterns

: Following Mendelian inheritance where free lobes are usually dominant and attached are recessive. lab activity blood type pedigree mystery answer key upd

: Students must draw a family tree for Joseph, Rita, and their descendants, marking generations with Roman numerals and individuals with specific symbols.

Use this updated data table to cross-reference phenotypes and determine exact genotypes. Family / Individual Character Name Phenotype (Blood Type) Confirmed Genotype Mr. John Smith IAicap I to the cap A-th power i Mrs. Mary Smith IBicap I to the cap B-th power i The Davis Family Mr. Robert Davis IAIBcap I to the cap A-th power cap I to the cap B-th power Mrs. Susan Davis The Jones Family Mr. David Jones Mrs. Karen Jones IAicap I to the cap A-th power i The Children IAIBcap I to the cap A-th power cap I to the cap B-th power IBicap I to the cap B-th power i RRcap R cap R IBicap I to the cap B-th power i The Estate Mystery Grandfather (Deceased) IAIBcap I to the cap A-th power cap I to the cap B-th power , Genotype varies Grandmother Claimant (Grandchild?) Part 3: Step-by-Step Pedigree Analysis & Answer Key Problem 1: Matching the Mixed-Up Children Step 1: Start with the RecessivesThe easiest way

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 .

A pedigree is a visual chart that tracks a trait through generations. In a blood type mystery lab, squares represent males and circles represent females. Lines connect parents and offspring. The goal is usually to identify the blood type or genotype of a "mystery" individual or to prove paternity/maternity within a fictional scenario. to solve a "whodunnit" scenario

The presence of a Type O child is the biggest clue, as it implies both parents must carry the