Lecture 10 - Lecture schedule Lecture 8: axis) Lecture 9:...

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Lecture schedule Lecture 8: Embryonic patterning (A-P axis) Lecture 9: Embryonic patterning (Segmentation and Homeotic genes) Lecture 10: Embryonic patterning (D-V axis)
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The Drosophila embryo shows A-P and D-V polarity
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Screens for developmental mutants revealed genes involved in specifying D-V axis wild type ventralized dorsal mutant dorsalized cactus mutant
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Screens for developmental mutants revealed genes involved in specifying D-V axis Maternal effect genes Expressed during oogenesis Zygotic genes Expressed in the embryo D-V axis depends on: A-P axis in the developing oocyte Signaling between developing oocyte and follicle cells
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Oogenesis in Drosophila Germarium ring canal Pattern of division in each egg chamber Cystoblast Pro-Oocyte germli ne stem cells follicle stem cells mline: stem cell > cystoblast > 1 oocyte + 15 nurse cells
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Oogenesis in Drosophila nurse cell oocyte stalk follicle cells border cells germline stem cells follicle stem cells oocyte ocyte + nurse cells surrounded by (somatic) follicle cells
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Specification of A-P and D-V polarity in the egg http://flymove.uni-muenster.de/
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mRNA is localized to the dorsal pole of the developing oocyte
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This note was uploaded on 10/31/2010 for the course CBNS 108 taught by Professor Green,demason during the Spring '10 term at UC Riverside.

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Lecture 10 - Lecture schedule Lecture 8: axis) Lecture 9:...

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