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This Concept Map, created with IHMC CmapTools, has information related to: Chapter 21, clone and the process of creating clones is called cloning, investigating the roles of cell signaling, induction, and programmed cell death in development. programmed cell death is termed apoptosis, Model Organisms are used to Study a particular biological question. They usually have a short generation time and small genomes and about which much is already known., Embryonic Development goes along with the process Cell differentiation, Model Organisms examples of Model Organisms include Arabidopsis thaliana, Nematodes is very useful for investigating the roles of cell signaling, induction, and programmed cell death in development., morphogenesis in plants, the structures responsible for morphogenesis are called apical meristems, Cell differentiation which is the process by which cells become specialized in structure and function., Cell differentiation when cell differentiation creates a cell exactly like the parent cell, it is called a clone, Cytoplastmic Determinants are encoded by Maternal effect genes, pattern formation molecular cues that control pattern formation are called positional information, Nematodes Researches know the nematodes complete Cell lineage, Model Organisms may be used to study such things as Embryonic Development, cloning cloning can be used to produce stem cells, Embryonic Development involves a single zygote, Cell lineage or it's complete ancestry, stem cells which are Relatively unspecialized cells that can both reproduce itself indefinitley and differentiate into specialized cells of one or more types., Embryonic Development Maternal substances in the egg that influence the course of early development are called Cytoplastmic Determinants, Cell differentiation any cell with the potential to dedifferentiate and give rise to all the specialized cell is called Totipotent, Drosophila have been molecularly analyzed and has shown they contain a 180-nucleotide sequence called a homeobox