Based on the data below, which group of animals are genetically diverse?
Group A: 5 dogs from the same breed (Labrador Retriever)
Group B: 3 dogs from different breeds (Labrador Retriever, German Shepherd, Golden Retriever)
Group C: 5 dogs from the same breed (Chihuahua)
Group D: 5 dogs from 5 different breeds (Labrador Retriever, German Shepherd, Golden Retriever, Chihuahua, Dalmatian)
Group D is the most genetically diverse as it contains dogs from 5 different breeds, whereas the other groups consist of dogs from fewer breeds or the same breed.