Lecture 4 2009

Lecture 4 2009 - A gene is composed of two parts ON OFF...

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ON OFF regulatory region (on/off switch) coding region (codes for amino acids) A gene is composed of two parts:
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Transcription factors turn genes on and off. Transcription factors are proteins that bind to a specific base sequence in DNA. …AGCCTA CCAAAAAAGG TTCCACG… …TCGGAT GGTTTTTTCC AAGGTGC…
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regulatory region (on/off switch) coding region (codes for amino acids) - Some transcription factors are activators: They turn genes ON.
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regulatory region (on/off switch) coding region (codes for amino acids) - Some transcription factors are activators: They turn genes ON. - Some transcription factors are repressors: They turn genes OFF.
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1. What is a mutant? 2. How is hereditary information passed on from one generation to the next? What are the rules? 3. The same rules apply to all plants and animals. Concepts
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Normal Fly
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White Eyes Mutant
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Dark Body Mutant
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Tiny Wing Mutant
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Wings Held-Out Mutant
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A mutant is different than “normal”.
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Lecture 4 2009 - A gene is composed of two parts ON OFF...

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