A) Epiboly Transcription factor involved in endoderm specification bowoliot no Involves mitosis and spreading of epithelial sheets to extend over the embryo (ie. epidermal formation during gastrulation) B) Micromere C) PMCS Initiates signaling pathways in competent cells. D) Paracrine factor _Tissue specific control of gene exp. E) Cadherin Reporter gene (ie. signals through enhancer) F) Lac Z Autonomously specified in sea urchin G) Beta-catenin Slow block to polyspermy H) Cortical granules Mechanism of gastrulation through invagination I) Enhancers

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