This recombinational event is catalyzed by a set of enzymes, many of which are also involved in nonhomologous end joining (NHEJ) DNA repair functions that occur in all cells.

TLS Online TPP Program

#Id: 2513

#Unit 13. Methods in Biology

Larger fragment DNA are isolated by using agarose gel while shorter fragment are separated by 3.5% polyacrylamide gels are used to separate DNA in the range 80–1000 nt and 12% gels to resolve fragments of between 20 and 100 nt.

TLS Online TPP Program

#Id: 940

#Unit 5. Developmental Biology

The mode of fertilization in sea urchin being external, the egg and spermatozoa are released into the sea water.

TLS Online TPP Program

#Id: 2801

#Unit 13. Methods in Biology

Normal-phase liquid chromatography form of partition chromatography

TLS Online TPP Program

#Id: 3804

#Unit 5. Developmental Biology

Early on during aggregation, gene expression requires the activity of cAMP-dependent protein kinase.

TLS Online TPP Program

#Id: 7756

#Unit 1. Molecules and their Interaction Relevant to Biology

Fluorine (the most electronegative element) is assigned a value of 4.0, and values range down to cesium and francium which are the least electronegative at 0.7