Animal Stem Cells and Regeneration · Zoology

The ability of an organism to regrow a lost tail, such as in many lizards, is often achieved through a process called:

  1. Autotomy followed by regeneration
  2. Metamorphosis from larval to adult form
  3. Parthenogenetic development from unfertilized eggs
  4. Binary fission producing two identical offspring
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Correct answer: Autotomy followed by regeneration

Autotomy is the voluntary shedding of a body part, typically to escape a predator. After autotomy, specialized tissues at the stump initiate a regenerative program; however, the regrown lizard tail typically contains cartilage rather than true vertebrae.

Difficulty: Medium Question 18 of 20

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