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What are morphological defects in livestock primarily caused by?

  1. Genetics

  2. Nutrition

  3. Accidents

  4. Inbreeding

The correct answer is: Accidents

Morphological defects in livestock are primarily influenced by genetic factors. These defects typically arise from inherited traits that are passed down through generations, which include issues related to skeletal formation, body structure, and organ development. While nutrition and environmental factors can affect an animal's overall health and development, the underlying genetic makeup plays the most significant role in determining specific morphological characteristics. Accidents may lead to physical injuries but do not cause inherent defects. Inbreeding, while it can increase the probability of genetic defects due to reduced genetic diversity, is a specific type of genetic influence. Therefore, the most accurate source of morphological defects remains genetic causes which dictate the physical traits of livestock.