Propidium iodide is a fluorescent dye with a flat, planar structure that slides between the rungs of (or intercalates into) the DNA ladder in a quantitative manner frequently used in FACS. 

TLS Online TPP Program

#Id: 957

#Unit 5. Developmental Biology

Species-specific bindin receptors present on the egg vitelline envelope.

TLS Online TPP Program

#Id: 5029

#Unit 3. Fundamental Processes

A cycle of chromosome replication must be initiated at a fixed time of C + D =60 minutes before cell division.

TLS Online TPP Program

#Id: 6378

#Unit 2. Cellular Organization

The lac operon has three paradoxes

if the operon is in a repressed state, how does the inducer enter the cell to start the process of induction

 If the operon is in a repressed state, how Repressor is removed with allolactose 

 How is allolactose synthesized in Repressed state Answer is Leaky Expression

TLS Online TPP Program

#Id: 3178

#Unit 3. Fundamental Processes

When there are mtDNAs with allelic variations in the same cell, called heteroplasmy (either because of inheritance from different parents or because of mutation).

TLS Online TPP Program

#Id: 862

#Unit 13. Methods in Biology

Polymerase chain reaction is based on thermal modulation and the only major difference in PCR and Replication is Origin Site.