Breeding Terminology: Match the Column

Correct Answer: 1-c, 2-d, 3-a, 4-b, 5-e

From the notes (breeding terminology definitions):

• 1. In crossing (c): Crossing of two different inbred lines derived from the same breed. Both lines are inbred but from the same breed.
• 2. In cross-breeding (d): Crossing of two different inbred lines derived from different breeds. Used in pig and poultry to exploit heterosis.
• 3. Out-crossing (a): Mating between unrelated animals of the same breed. Simplest form of outbreeding. Progeny = outcross.
• 4. Top-crossing (b): Mating of purebred (inbred) males with unrelated females — like grading up but for only ONE generation.
• 5. Species hybridization (e): Mating between animals of different species. Farthest form of outbreeding. Examples: Mule (Mare × Jack), Hinny (Stallion × Jennet), Cattalo, Pien-niu (Cattle × Yak).