Zoo3603c Study guides, Class notes & Summaries

Evo of Regeneration: what do we mean by regeneration at the molecular level? constant biochemical turnover, so at this level everything regenerates Evo of Regeneration: what do we mean by regeneration at the cellular level? cells are perfect regenerators, constantly replacing cytoplasm. Constantly replacing red blood cells. Evo of Regeneration: why types of tissues can be regenerated? vasculature skeletal muscle flexible lungs liver Evo of Regeneration: what type of regeneration does t...

How has developmental biology impacted modern medicine? IVF (in vitro fertilization) teratology - study of congenital abnormalities Birth defects, prenatal diagnosis cloning What is regulation? the ability to respecify cells so that the removal of cells destined to become a particular structure can be compensated for by other cells producing that structure Who discovered Regulation? Roux What is determination? the second and irreversible stage of a cell or tissue commitment in which t...

Axonal Guidance: where are motor neurons produced? ventral spinal cord Axonal Guidance: what is the optic vesicle? an outgrowth of the forebrain neuroepithelium, the developing eye Axonal Guidance: how is he lens induced? When the optic vesicle meets the surface ectoderm, the lens is induced in the ectoderm Axonal Guidance: what are the layers of the developing eye? neural retina - inner layer of optic vesicle pigmented retina - outer layer of optic vesicle Sclera - formed from neural...

Trigger for Limb DevelopmentDecreasing food, decreasing reproductive opportunities, more competition From which group of fish did tetrapods arise from?Ray-finned fishes (actinopterygii) and lobe-finned fishes (sarcopterygii) Which ancient fish limbs is more likely to have evolved into tetrapod limbs?Coelacanth fin strucutre (homologous elements) What digit limb evolved first?Five digit limbs (not a basal trait of all tetrapods) Pentadactyl limbsBetter weight bearing (fin with a wrist)