# Example Problems

Solutions to the example problems are open for all. Instructors must register for an account to see solutions for all other problem sets.

spc**Low Difficulty Problem**

- A determined male bassett hound mates with a long-legged female black Labrador retriever. Students must explain which puppy from a set of photos is theirs, using a Punnett square to provide evidence to support that choice.

spc**Moderate Difficulty Problem**

- Whippets are small racing dogs. Breeders select and mate the fastest whippets, but risk the appearance of a homozygous recessive mutation in the pups that prevents them from racing. Students must calculate probabilities of producing a non-racer, given the probability of the mutation in the general breed population.

- Students must calculate the probability that a yellow puppy in a litter of black purebreds is part of the family, or adopted. To solve this problem students must identify two separate alleles and estimate probability of observing the variant color.

- This set demonstrates how to construct a series of questions of increasing difficulty using just one dog as the model. The questions can be posed at different times over the course of a semester as students gain knowledge and skill.