TLS Online TPP Program

#Id: 4646

#Unit 13. Methods in Biology

Diphenyltetrazolium bromide, a yellow tetrazole is reduced by metabolically active cells to form insoluble, purple formazan dye crystals detected at 570nm

TLS Online TPP Program

#Id: 6745

#Unit 8. Inheritance Biology

TLS Online TPP Program

#Id: 7554

#Unit 6. System Physiology – Plant

Ratio of GA:ABA affects early germination (vivipary).   With high levels of ABA, seeds remain dormant.  

TLS Online TPP Program

#Id: 9210

#Unit 11. Evolution and Behavior

Genetic bottleneck

Genetic drift arises is through a genetic bottleneck, which develops when a population undergoes a drastic reduction in size

TLS Online TPP Program

#Id: 3977

#Unit 2. Cellular Organization

The degree of supercoiling of bacterial DNA is maintained by regulation of the net activity of topoisomerases, I and II.