Cross-breeding is mating of.

Options

A. (1) Animal of two different breeds of different species
B. (2) Animals of two different breeds of same species
C. (3) Superior animals of same breed
D. (4) Superior animals of two different species

Answer

**Step-by-Step Solution:**

1. **Understanding Cross-Breeding**: Cross-breeding refers to the mating of animals to produce offspring. The key aspect of cross-breeding is that it involves animals from different genetic backgrounds.

2. **Identifying the Correct Definition**: The question provides two options regarding what cross-breeding entails:
- Option 1: Animals of two different breeds of the same species.
- Option 2: Animals of two different species.

3. **Clarifying the Concept of Species**: A species is a group of organisms that can interbreed and produce viable offspring. Within a species, there can be various breeds that exhibit different characteristics but are still genetically similar enough to produce viable offspring.

4. **Determining the Correct Option**: Since cross-breeding involves mating animals of different breeds but within the same species to ensure that the offspring are viable, the correct answer is:
- Animals of two different breeds of the same species.

5. **Conclusion**: Therefore, the correct answer to the question "Cross-breeding is mating of" is:
- Animals of two different breeds of the same species.