Ultraviolet irradiation causes dimer formation between adjacent thymines. The dimer blocks replication and transcription. 

TLS Online TPP Program

#Id: 2167

#Unit 11. Evolution and Behavior

Natural selection is any consistent difference in fitness among different classes of biological entities.

TLS Online TPP Program

#Id: 8686

#Unit 1. Molecules and their Interaction Relevant to Biology

TLS Online TPP Program

#Id: 2814

#Unit 13. Methods in Biology

Proteins differ in the amount of hydrophobic amino acids that are present on their surface. This difference can be exploited in salt fractionation but can also be used in a higher resolution method using hydrophobic interaction chromatography (HIC).

TLS Online TPP Program

#Id: 6843

#Unit 8. Inheritance Biology

Determining gene number for a polygenic characteristic 

(¼)n

TLS Online TPP Program

#Id: 7266

#Unit 6. System Physiology – Plant

Chaperonins GroEL and GroES sequester and ensure the correct folding of the newly synthesized large subunit (L). 

The assembly chaperone (RbcX)2 binds the large subunit and provides positional information for proper association of large subunit dimers to form the L8–((RbcX)2)8 complex. 

The small subunit (S) associates with L8–((RbcX)2)8, triggering a conformational change in RbcL and eliciting 

the release of (RbcX)2 and formation of the catalytically mature Rubisco holoenzyme [L]8–[S]8.