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Chapter 12 Section 5 Gene Regulation

Chapter 12 Section 5 Gene Regulation. Biology. Objectives. ______________a typical gene _________how lac genes are turned off and on __________how most eukaryotic genes are controlled ________gene regulation to development. Describe. Describe. Explain. Relate.

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Chapter 12 Section 5 Gene Regulation

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  1. Chapter 12 Section 5Gene Regulation Biology

  2. Objectives ______________a typical gene _________how lac genes are turned off and on __________how most eukaryotic genes are controlled ________gene regulation to development Describe Describe Explain Relate

  3. An_____________is a group of genes that operate together. • In E. coli, these genes must be turned on so the bacterium can use lactose as food. • Therefore, they are called the lacoperon. operon

  4. The lacgenes are turned off by repressors and turned on by the presence of lactose. • Many genes are regulated by repressor proteins. • Some genes use ________________that speed transcription. • Sometimes regulation occurs at the level of protein synthesis. proteins

  5. Eukaryotic Gene Regulation • Operons are generally ______________in eukaryotes.    • Most eukaryotic genes are controlled individually and have regulatory sequences that are much more complex than those of the lacoperon. not found

  6. Development and Differentiation • As cells grow and divide, they undergo_________________, meaning they become specialized in structure and function. • __________________control the differentiation of cells and tissues in the embryo. differentiation Hox genes

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