Answer :
Meis, HoxA, and HoxD have all been found to be crucial PD patterning regulators during axolotl limb regeneration, along with other transcription factors.
These genes likely function in the pathways that encode positional identity upstream of the Prod1 gene, and RA proximalizes their level of expression.
In order to replace a limb or fin lost to a hungry predator, several species of fish and amphibians have the ability to regenerate new bone, muscle, and blood vessels using stem cells that develop at the site of the injury.
Regeneration is defined as the process of creating an entire organism from a component of it. Regeneration examples include Hydra and Planaria. Each body part can regenerate and contribute to the formation of a complete Planaria when the body structure of a Planaria is broken up into a number of pieces.
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