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Practice of mating of animals within the...

Practice of mating of animals within the same breed, but having no common ancestors on either side of their pedigree upto 4-6 generation is

A

inbreeding

B

out crossing

C

cross breeding

D

line breeding

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Question:** The question asks about the practice of mating animals within the same breed that do not share common ancestors for 4-6 generations. 2. **Identifying Key Terms:** - Mating within the same breed - No common ancestors - 4-6 generations 3. **Analyzing the Options:** - **Inbreeding:** This involves mating animals that are closely related, meaning they share common ancestors. Therefore, this option is incorrect. - **Outcrossing:** This refers to mating animals within the same breed that do not share common ancestors for 4-6 generations. This matches the description given in the question. - **Crossbreeding:** This involves mating animals from different breeds, which does not fit the criteria of the question. - **Line Breeding:** This is a form of inbreeding where the animals are related but not closely, which also does not fit the criteria. 4. **Conclusion:** Based on the analysis, the correct answer is **Outcrossing**. This method helps to maintain genetic diversity and can improve traits in the offspring. 5. **Definition of Outcrossing:** Outcrossing is defined as the practice of mating animals within the same breed without any common ancestors on either side of their pedigree for 4-6 generations. The offspring produced from this method are referred to as "outcrosses." 6. **Benefits of Outcrossing:** - It is particularly beneficial for animals with below-average productivity traits, such as milk production. - A single outcross can help alleviate issues related to inbreeding depression. **Final Answer:** The practice described in the question is known as **Outcrossing**. ---
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