Part 3. Modes of inheritance: single gene or polygenic?

This is the third part of the 5-part course Genetics for Breeders and Vets.

In this third part, we will look at the following questions:

• How do we know if a trait is hereditary?
• How do we know whether a trait is monogenic or polygenic?
• Epilepsy is often a threshold trait. What does this mean?
• Major genes have been identified for instance for osteochondrosis (horses), intervertebral disc disease (dogs) and bladder stones (dogs) – but what is a major gene?
• How does the genetic association between traits affect breeding?
• What is indirect selection and how can it be used in animal breeding?