The “introns early” hypothesis is the proposal that introns have always been an integral part of the gene.  Genes originated as interrupted structures, and those now without introns have lost them in the course of evolution.

TLS Online TPP Program

#Id: 8065

#Unit 13. Methods in Biology

TLS Online TPP Program

#Id: 8066

#Unit 13. Methods in Biology

Optically active chiral molecules will preferentially absorb one direction of the circularly polarized light. 

TLS Online TPP Program

#Id: 8067

#Unit 13. Methods in Biology

If an optically active molecule has a positive CD, then its enantiomer will have a negative CD of exactly the same magnitude.

TLS Online TPP Program

#Id: 8068

#Unit 13. Methods in Biology

TLS Online TPP Program

#Id: 8069

#Unit 13. Methods in Biology

A photoelastic modulator (PEM) is then used to convert the linearly polarized light into circularly polarized light.

TLS Online TPP Program

#Id: 8070

#Unit 13. Methods in Biology

An optically active chiral compound will absorb the two directions of circularly polarized light by different amounts