2. All of the conclusions regarding heredity (dominant/recessive; codominant) we have discussed so far have been obtained from analyzing the results of controlled crosses. In some situations, we do not have the opportunity to perform controlled crosses. Rather we need to analysis an existing population.

6. Goals of Pedigree Analysis 1. Determine the mode of inheritance: dominant, recessive, sex-linked, autosomal, maternal effect. 2. Determine the probability of an affected offspring for a given cross.