BIO202H5 Lecture Notes - Lecture 9: Euprymna Scolopes, Fish Fin, Axolotl
Document Summary
Internal balance is affected by external environment through biochemical or chemical signalling. Species of squid ( hawaiian bobtail squid ) that is bioluminescent. Bacteria colonise specialized organs in the squid. The predatory squid can blend in with the environment and thus improve camouflage when catching prey. There is a pouch where bacteria resides. Effect trigger a series of internal responses. Growth, metabolism, and sexual development of animals is complex and depends on specific environmental and ecological cues. Internal response to external cues balances by the endocrine system. This is a change in the physical appearance of an organism. Accelerates the growth of pelvic fins in axolotl. The pelvic fin development is larger in t4 exposed group than control group (not exposed to t4) Different combinations and concentrations can affect the metamorphosis advancements. Also, the figure exhibits that iop+t3 has the similar effect as t3 and so.
