LO: I can analyze pedigree and review Chi Square mendelian genetics
CS2: Visual Model Data Analysis
Do Now: What do you already know about pedigree from the start?
Pedigree A visual chart that analyzes the pattern of genetic traits throughout a family. Pedigrees show the presence or absence of a trait as it relates to the relationship among family members.
Reading Pedigrees
- If a trait is dominant, one parent must have the trait
- Dominant traits do no skip a generation
- If a trait is X-linked, then males are more commonly affected than females
To determine the probability that both parents are carriers, apply the Law of Multiplication with probabilities and use the following formula:
PF x PM = 2/3 x 1 = 2/3
(Where PF, PM = probabilities of father, mother being carriers)