Rhodopsin is comprised of: 

Retinal (an aldehyde of vitamin A)

Opsin protein (GPCR)

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#Unit 8. Inheritance Biology

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#Unit 11. Evolution and Behavior

Genetic drift 

Genetic drift is an evolutionary force, in which allelic frequency change over generation Just by chance (sampling error). 

The deviations from the expected ratios are random, the direction of change is unpredictable.

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#Unit 4. Cell Communication and Cell Signaling

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#Unit 2. Cellular Organization

Cyclins are degraded through the action of two different E3-ligases:

1. SCF (Skp1, Cullin, and F-box proteins) 

2. APC/C or cyclosome

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#Unit 3. Fundamental Processes

A new model for the structure of the DNA Pol III complex proposes a three-polymerase core structure, with two Pol III catalytic cores responsible for synthesis of the lagging strand and one for the leading strand.