A mule is the result of Interspecific hybridization.
(A) Out-crossing - Incorrect: Refers to breeding within the same species but unrelated individuals.
(B) Cross-breeding - Incorrect: Typically denotes breeding different breeds of the same species.
(C) Interspecific hybridization - Correct: Mules result from crossing horse (Equus caballus) and donkey (Equus asinus).
(D) Out-breeding - Incorrect: General term for avoiding inbreeding, not specific to hybrid crosses.
The correct answer is (C) Interspecific hybridization, producing this sterile hybrid of different Equus species.
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A mule is the hybrid offspring produced by the mating of a male donkey and a female horse. This type of hybridization is known as interspecific hybridization, where two different species (donkey and horse) mate to produce an offspring.
Out-crossing refers to the mating of unrelated individuals of the same species to increase genetic diversity.
Cross-breeding is a broad term that could include both intraspecific (within species) and interspecific (between species) mating, but here it refers specifically to hybrids between different species, making interspecific hybridization the most accurate answer.
Out-breeding refers to mating of individuals within the same species that are genetically distinct.
