Title: Compare outcrossing/mixed breeding, line breeding, and inbreeding.
Course: Veterinary Science II (18105-II) > Section: Understanding Genetics and Breeding

Comparing should include

- defining relevant terms
- outlining the similarities and differences among the different types of breeding
- identifying the reasons for and potential outcomes of the different types of breeding
- describing the use of genetics in selective breeding

  - the impact of chromosomal abnormalities on animal health
  - how a pedigree chart identifies potential recessive allele carriers
  - how breeding programs are used to reduce genetic disorders
  - the benefits of genome research for improved breed health and diversity.

Teacher Resource: StarGenetics, Office of Digital Learning, Massachusetts Institute of Technology

Process/Skill Questions:

- Why might a breeder consider inbreeding?
- What is linebreeding? Why is it used?
- Which program—outcrossing, line breeding, or inbreeding—is least likely to produce conditions caused by homozygous recessives?
- Why would one avoid breeding an animal that phenotypically demonstrates a disease condition?
- Why do the offspring of an individual animal demonstrating an extraordinary characteristic, sometimes fail to meet the expectations of the breeder?