BIO SCI 93 Final: Final Study Guide (lectures 18-23)
7 Feb 2019
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BIO SCI 93 Full Course Notes
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Document Summary
Three processes to go from frog zygote to tadpole. Process when cells become specialized in structure and function. Physical process which gives organism its shape. When placed into an egg influences early development by regulating gene expression during cell differentiation. Cell nuclei of the embryo are exposed to different sets of cytoplasmic determinants. Cells at the bottom of the early embryo are releasing molecules that signal (induce) nearby cells to change gene expression. Signaling molecules send a cell down a specific pathway by causing changes in it gene expression. Point at which an embryonic cell is irreversibly committed to becoming a. Allows cells to be specialists at making a particular tissue specific proteins. Ability to turn fat/liver cells into muscle cells after determination. Control pattern formation by indicating the cell"s location relative to the organism"s body axes. Provided by cytoplasmic determinants and inductive signals.
