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#Id: 6145

Cockayne syndrome can be caused by mutations in either of two genes (CSA and CSB), both of whose products appear to be part of or bound to TFIIH, and can also be caused by specific mutations in XPB or XPD.

#Unit 3. Fundamental Processes #Mutation and Repair #Part B Pointers

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#Id: 1812

#Unit 10. Ecological Principles

Exponential growth

Describes population growth for continuous breeders

Such as bacteria, internal parasites, some insects, or humans, reproduction can be continuous.

#Id: 1813

#Unit 10. Ecological Principles

Population sizes at various times

N_t = N₀e^rt

#Id: 1814

#Unit 10. Ecological Principles

Per capita rate of increase, r, related to the net reproductive rate, R₀

#Id: 1815

#Unit 10. Ecological Principles

#Id: 1816

#Unit 10. Ecological Principles

r, is affected by organismal size and generation time.

#Id: 1817

#Unit 10. Ecological Principles

When conditions are optimal for the population, r is at its maximum rate and is called the intrinsic rate of increase (_rmax).