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Bio_160_Lecture4

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Subject: 
Biology
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Tags: 
Biology
Genetics
RNA
Gene expression
Molecular biology
Molecular genetics
Epigenetics
Messenger RNA
Transcription factor
Regulation of gene expression
Chromatin
Gene
health

Gene Expression Chapter 11 ? Differentiation yields a variety of cell types, each expressing a different combination of genes ? Different types of cells make different proteins because different combinations of genes are active in each type Muscle cell Pancreas cells Blood cells Fiure 11.2 Differentiated cells may retain all of their genetic potential Most differentiated cells retain a complete set of genes Root of carrot plant Root cells cultured in nutrient medium Cell division in culture Plantlet Adult Plant Single cell Figure 11.3 DNA packing in eukaryotic chromosomes helps regulate gene expression ? A chromosome contains DNA wound around clusters of histone proteins ? This beaded fiber is further wound and folded

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