Final answer:
Regeneration in animals, called organogenesis, involves the differentiation and proliferation of adult cells to regrow limbs or tails. Echinoderms like sea stars can regenerate from fragmentation. Stem cells are integral to tissue renewal and repair.
Step-by-step explanation:
Regeneration in animals is called organogenesis, where adult cells differentiate and proliferate to grow back an identical limb or tail. Notably, certain echinoderms such as sea stars, can regenerate lost arms, and under specific circumstances, these arms can regenerate a complete sea star. This is a type of fragmentation, which involves the breaking of an individual into parts followed by regeneration. If the broken part is large enough, and the animal has the capability, it may regrow into a separate individual.
Stem cell research
plays a crucial role in understanding and harnessing the potential for regeneration in both humans and animals.
Adult stem cells
can proliferate and
differentiate
to repair and renew damaged tissues, which is a form of the body's natural healing mechanism.