developmental genetics

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10 Terms

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toripotent

cell that has the potential to develop into any cell type

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determination

cell becomes committed to a particular cell fate

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cloning experiments

supported hypothesis that all cells contain same genetic material, but different genes are expressed, the development requires selective expression

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what are the development stages of fruit flies (drosophilia)

embryo»three larval stages»adults (different genes influence development at each stage)

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syncytium

multinucleate cell

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syncytium blastoderm

nuclei migrate to edge of cell and divide

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cellular blastoderm

cell membrane grows around each cell nucleus

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primordial germ cells

nuclei at one end of blastoderm

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3 steps to embryo development

1.) establish axes (either dorsal-ventral or posterior-anterior)

2.) number of segments and orientation of body segemnts

3.) determine identity of each segment

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