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Unformatted text preview: Positional info. molecular cues that control pattern formation collectively Embryonic lethal mutations with phenotype causing death at the embryonic or larva stage Egg polarity genes maternal effect genes Maternal effect gene when a mutant in the mother results in a mutant phenotype in the offspring regardless of their own genotype Morphogens gradient of substances Segmentation genes the genes of the embryo whose products direct formation of segments after the embryos major body axes Homeotic genes the anatomical identity of segments is set by master regulatory genes Cell lineage basically a pedigree Apoptosis programmed cell death Chimera organisms with mix of genetically diff. cells Organ identity gene determines the type of structure that will grow from a meristem Homeo box 180 nucleotide box...
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This note was uploaded on 11/21/2010 for the course OB 12545 taught by Professor Yomany during the Spring '10 term at Mt. Olive.
- Spring '10