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| Modern Genetic Analysis Chapter 16. The Genetic Basis of Development Binary Fate Decisions: the Germ Line Versus the Soma Figure 16-10. Movement of vesicles along micro-tubules. (a) A scanning electron micrograph of two small vesicles attached to a microtubule. (b) A diagram of how kinesin is thought to attach to cellular cargoes such as vesicles at its tail and to move the cargoes along the microtubule in the to + direction by using the motor domain in the kinesin head. (c) A diagram of the kinesin protein showing the functions associated with various parts of the molecule. (Part a from B. J. Schnapp et al., Cell 40, 1985, 455. Courtesy of B. J. Schnapp, R. D. Valle, M. P. Sheetz, and T. S. Reese. All parts: Reprinted from H. Lodish, D. Baltimore, A. Berk, S. L. Zipursky, P. Matsudaira, and J. Darnell, Molecular Cell Biology, 3d ed. Copyright © Scientific American Books, 1995.)

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