Breeding for Speed: Benefits vs. Risks
Activity 6: Slides 35–38
2. Explain to students that bully whippets have a mutation in the gene for a muscle protein (myostatin). Dogs with one copy of the mutation run faster. Dogs with two copies of the mutation have an unusual body shape, bulky muscles, an overbite, shorter legs and thicker tails. These dogs are not valuable as racing or as show dogs. Thus, one copy of the mutated allele produces dogs with an advantage in racing. However, dogs with two copies are undesirable as racing or show dogs.
Keywords: allele | biology | breed | breeding | breeds | bully whippet | canid | canidae | canine | canis familiaris | coat | DNA | dog | ethics | furnishings | gene | genetic | genetic code | genetic testing | genetics | genetics | genome | genotype | hair | heterozygote | homozygote | life science | mutation | phenotype | species | lesson
- Mosher, D., Quignon, P., Bustamante, C., Sutter, N., Mellersh, C., Parker, H., et al. (2007) A Mutation in the Myostatin Gene Increases Muscle Mass and Enhances Racing Performance in Heterozygote Dogs. PLoS Genet 3(5): e79. doi:10.1371/journal.pgen.0030079A. Public domain.
- Moreno, N. (2017) Complex Traits Teacher’s Guide. Baylor College of Medicine: Houston. ISBN: 978-1-994035-08-2.
Your slide tray is being processed.