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TLS Online TPP Program

#Id: 7247

T1 cells are mIgMhi, mIgD -/lo, CD21-, CD23-, CD24+, and CD93+. 
T2 cells differ from T1 cells in having higher levels of mIgD and in expressing CD21 and CD23. 

#Unit 5. Developmental Biology #Major histocompatibility complex #Part B Pointers
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TLS Online TPP Program

#Id: 8977

#Unit 11. Evolution and Behavior

Molecular clock - The concept of a steady rate of change in DNA sequences over time. 
TLS Online TPP Program

#Id: 8978

#Unit 11. Evolution and Behavior

Proportion of base pairs that differ between sequences(D) 

D= 2rt

r  = rate of divergence per base pair per million  

T = time
TLS Online TPP Program

#Id: 8979

#Unit 11. Evolution and Behavior
TLS Online TPP Program

#Id: 8980

#Unit 11. Evolution and Behavior
TLS Online TPP Program

#Id: 7324

#Unit 11. Evolution and Behavior
TLS Online TPP Program

#Id: 7325

#Unit 11. Evolution and Behavior

The Hardy-Weinberg Law