Match: Advanced Breeding Crosses
Match the column:
| TABLE-I | TABLE-II |
|---|---|
| 1) In crossing | a) Mating between unrelated animals of the same breed |
| 2) In cross-breeding | b) Mating of purebred (inbred) males with unrelated females |
| 3) Out-crossing | c) Crossing of two different inbred lines of the same breed |
| 4) Top-crossing | d) Crossing of two different inbred lines of different breeds |
| 5) Species hybridization | e) Mating between animals of different species |
- 1-c, 2-d, 3-a, 4-b, 5-e — Correct Answer
- 1-d, 2-c, 3-a, 4-b, 5-e
- 1-c, 2-a, 3-d, 4-b, 5-e
- 1-a, 2-b, 3-c, 4-d, 5-e
Explanation:
Correct Answer: 1-c, 2-d, 3-a, 4-b, 5-e
The correct matches are:
| Term | Match | Key Point |
|---|---|---|
| 1) In crossing | c) Crossing of two different inbred lines of the same breed | Both lines from same breed |
| 2) In cross-breeding | d) Crossing of two different inbred lines of different breeds | Lines from different breeds |
| 3) Out-crossing | a) Mating between unrelated animals of the same breed | Simplest form of outbreeding |
| 4) Top-crossing | b) Mating of purebred (inbred) males with unrelated females | Similar to grading up (one generation) |
| 5) Species hybridization | e) Mating between animals of different species | Most extensive form of outbreeding |
Types of Outbreeding Summary
| Type | Definition | Special Point |
|---|---|---|
| Out-crossing | Same breed, unrelated | Simplest outbreeding |
| Grading-up | Purebred sire × local female, 7–8 generations | To obtain pure breed |
| Top-crossing | Purebred male × unrelated female | One generation only |
| Cross-breeding | Different breeds, same species | New breed; hybrid vigour |
| Species hybridization | Different species | Farthest form of outbreeding |
📚 About this Topic — Animal Genetics & Breeding
This multiple choice question is from Animal Genetics & Breeding, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Genetics & Breeding to strengthen your preparation.
