Genetics / Pedigree analysis

1. Are all congenital defects hereditary? Why or why not?

2. Can the sire have a greater effect than the dam on traits in the offspring due to greater “strength” of his genes?

3. Look up the know hereditary disorders in your breed. Choose one of these disorders and, considering the mode of inheritance, describe how you will test animals and to whom carriers or those testing positive should be bred.

Case Study: A potential buyer of pups from your pregnant Border Collie wants to make sure the pups all were sired by your Best In Show male before putting any money down. What can you tell this buyer about parentage testing in dogs?

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