Dev Biol 12) C. elegans Development cont. - 2 spp

Dev Biol 12) C. elegans Development cont. - 2 spp - 10/4/10...

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Unformatted text preview: 10/4/10 1 Developmental Biology BIOL 3090-001 Lecture 12) C. elegans II BMP in Development Ventralizes mesoderm to form muscle Promotes an epidermal fate in ectoderm Promotes bone formation (b one m orphogenic p rotein) 10/4/10 2 Lecture Outline Cell-cell signaling in early development Notch/Delta Wnt: MOM and POP RNAi miRNAs control the timing of development C. elegans Development (continued) Plant Development Plant cells vs animal cells Arabidopsis thaliana is the plant model system Embryonic development: stages and axis development RNA Interference (RNAi) Method of silencing gene function at the RNA level Phenomena first discovered in plants Process thought to exist to help defend the cell against viruses 10/4/10 3 Timing of Development is Under Genetic Control Invariant lineage makes it easy to study the timing of development Heterochronic genes affect the timing of development Examples: lin-4 and lin-14 LIN-14 and LIN-4 Control the Timing of Development...
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Dev Biol 12) C. elegans Development cont. - 2 spp - 10/4/10...

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