Orthograde transport

moves from the cell body toward the axon terminals 

occurs along microtubules that run along the length of the axon and requires dynein and kinesin

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#Unit 3. Fundamental Processes

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#Unit 3. Fundamental Processes

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#Unit 3. Fundamental Processes

Chromatin remodeling is tool for Epigenetic effects which result from modification of a nucleic acid after it has been synthesized or by the perpetuation of protein structures.

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#Unit 3. Fundamental Processes

Position effect variegation (PEV) 

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#Unit 3. Fundamental Processes

In Drosophila, an example of position effect variegation in the fly eye. 

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#Unit 3. Fundamental Processes

Some of the regions in the eye lack color, whereas others are red. This is because the white gene (required to develop red pigment) was inactivated by adjacent heterochromatin in some cells, but remained active in others.