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A horse and a donkey can breed to produce mule which is an infertile animal. The infertility is because horse an donkey belong to different.

Options

  1. Aclass
  2. Border
  3. Cspecies
  4. Dgenus

Correct answer

C. species

Step-by-step solution

Horse and donkey belong to the different species, with different number of chromosomes.

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