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11-Development03 - Developmental Genetics How do genes...

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3/6/10 Bio 151 - Prof. Autumn 1 Developmental Genetics Bio 151 Investigations in Genetics and Evolution Prof. Kellar Autumn [email protected] How do genes control development? 3/6/10 Bio 151 - Prof. Autumn 2 3/6/10 Bio 151 - Prof. Autumn 3 How Are Cell Fates Determined? 3/6/10 Bio 151 - Prof. Autumn 4 Conclusion: Nuclei are totipotent (intestine cell) Develops through tadpole stage! Question: How do cells with identical genetic material develop into different cell types? Permanent changes to chromosomes? anucleate (from intestine cell)
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3/6/10 Bio 151 - Prof. Autumn 5 Oocyte Nucleus Oocyte mRNA 3/6/10 Bio 151 - Prof. Autumn 6 Become germ cells Syncytial blastoderm Anterior Posterior Cellular blastoderm 3/6/10 Bio 151 - Prof. Autumn 7 3/6/10 Bio 151 - Prof. Autumn 8 Maternal effect genes in nurse cells control overall body plan Rescued! No head!
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