Medical Genetics 1. Pedigree and proband Humans are unique among organisms in many ways, but one way which is near and dear to a geneticist's heart is that humans are not susceptible to genetic experimentationMedical Genetics 1. Pedigree and Proband Humans are unique among organisms in many ways, but one way which is near and dear to a geneticist's heart is that humans are not susceptible to genetic experimentation