Genes and Differentiation

Genes and Differentiation - Genes and Differentiation...

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Genes and Differentiation – Induction Two mechanisms for control of differentiation (into different cell types) are  cytoplasmic  segregation  and  induction 2. Induction -  One cell type influences another to differentiate -  Cells may secrete inducers -  Signals determining which genes are expressed may come from neighboring cells -  Example: lens formation in frog eye Cells induce other cells during lens formation Induce other nearby cells to develop into cornea Ultimately: only certain subsets of genetic information in DNA expressed at any given time in  any given cell Genetic Disorders – Chapter 15 1. What are they? 2. How are they inherited? 3. Mutations 4. Detecting genetic disorders 5. Cancer Types Causes 6. Treating Genetic Diseases 7. Gathering more information 1. What are Genetic Disorders? Genetic abnormalities can cause diseases Human diseases caused by a  single altered protein  occur in about 1% of the  population Abnormal or missing N-base sequences affect proteins:
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o Enzymes o Hemoglobin (sickle cell anemia) o Receptors o Transport Proteins (cystic fibrosis) o Structural Proteins
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Genes and Differentiation - Genes and Differentiation...

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