The gene can be restored to normal function if a second mutation either (1)converts the misplaced termination codon to a codon specifying an amino acid or (2) suppresses the effects of the termination codon, such restorative mutations are called nonsense suppressors.

TLS Online TPP Program

#Id: 738

#Unit 3. Fundamental Processes

To identify DNA that is in the process of replicating, DNA derived from dividing cells is first cut with a restriction enzyme and separated on a 2D agarose gel.

TLS Online TPP Program

#Id: 1169

#Unit 7. System Physiology – Animal

The ideal glomerular marker is inulin.

TLS Online TPP Program

#Id: 8451

#Unit 1. Molecules and their Interaction Relevant to Biology

The diameter of a typical α helix is about 12 Å, which matches the 12 Å wide and 6–8 Å deep major groove of B-form DNA. 

TLS Online TPP Program

#Id: 7865

#Unit 1. Molecules and their Interaction Relevant to Biology

TLS Online TPP Program

#Id: 10056

#Unit 4. Cell Communication and Cell Signaling

Cell-adhesion molecules (CAMs) mediate direct cell-cell adhesions.