Minimum Breeds in Rotational Crossing
Minimum number of breeds involved in rotational crossing is-
- Three
- Four
- Two — Correct Answer
- None
Explanation:
Correct Answer: Two
The minimum number of breeds involved in Rotational Crossing is Two. This is called a 2-way rotational cross (Criss-cross), where males of two breeds are used alternately with the crossbred females produced.
Types of Rotational Crossing
| Type | No. of Breeds | Other Name |
|---|---|---|
| 2-way rotational cross | 2 (minimum) | Criss-cross breeding |
| 3-way rotational cross | 3 | — |
Cross-breeding Examples
- Crossbreeds of Sheep: Hissardale, Avikalin, Avivastra
- Crossbreeds of Cattle: Karanswiss, Jersindh, Frieswal
Advantages of Cross-Breeding
- Breed complementation — combine good qualities of two or more breeds
- Advantage of hybrid vigour
- Improve traits that cannot be improved by selection within a breed
📚 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.
