With regard to animal breeding, which one among the following is not correct?

• A

  In-breeding: Mating of more closely related animals within the same breed for 1-2 generations
• B

  Out-breeding : Breeding of unrelated animals of the same breed without common ancestors for 4-6 generations.
• Correct answer
  C

  Cross-breeding : Superior males of one breed are mated with superior females of another breed.
• D

  Out-crossing : Offspring is called an 'out cross'.

Hence, the correct answer is option: 'C'.