BIOL 1105 Lecture Notes - Lecture 20: Cellular Differentiation, Hox Gene, Adult Stem Cell
13 Nov 2017
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Describe how model organisms are used to understand the. Process by which a single cell of a fertilized egg becomes a fully-formed adult. Only model organism for which a complete cell lineage has been mapped. Characterize the four major processes responsible for animal. Required to transform the single-celled zygote into a multicellular organism. In early embryos, the first cell divisions are cleavages. Systematic gene expression is responsible for patterning or setting up the body plan of an organism. Describe the progressive nature of cell determination and. Not fully-specified, meaning they can give rise to multiple cell types. The ability to divide to produce more stem cells (self-renewal) The ability to divide to produce daughter cells of a specific type or types. When the division of a stem cell produces a specialized cell, that daughter cell is said to be differentiated. Caused by changes in gene expression that ultimately result in cell specialization. Gradual process that occurs over multiple cell divisions.
