Respuesta :

Answer:

Inbreeding

Explanation:

Inbreeding is the process of mating of individuals or organisms that are closely related through common ancestry, as opposed to out breeding, which is the mating of unrelated organisms. Inbreeding is used to concentrate desirable traits. Mild inbreeding has been extensively used in laboratory for  mice and rats.

The answer is B (inbreeding). I've had this question before.

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