BIO 3147 Study Guide - Midterm Guide: Steatomys, Demountable Rack Offload And Pickup System, Dscam
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Regulative = driesch"s - cut zygote in two. Induce via paracrine - autocrine, juxtacrine, gap mediated junction or endocrine. 5 major steps in cell signalling = ltncc = ligand receptor, tf, nuclear local, chromatin deco(cid:373)p, coupled i(cid:374)itiatio(cid:374) a(cid:374)d (cid:1009)" cap: ligand binds to receptor, transcription factor, nuclear localization, chromatin decompaction, coupled i(cid:374)itiatio(cid:374) a(cid:374)d (cid:1009)" cappi(cid:374)g. Figure 3. 13 ectodermal competence and the ability to respond to the optic vesicle inducer. Figure 3. 14 sequence of amphibian lens induction postulated by experiments on embryos. 3 germinal tissues on far left color coded: signals are sent at a particular time. Otx2 is a transcription factor which activates pax6 (another transcrip factor) to activate sox3. Based on genes expressed, if pax6 removed the next step would not be completed. With time, diff competency is based on expression profile of genes done by transcription factors turning genes on or off.
