Selectable reporter genes

Selectable marker genes include those conferring resistance to methotrexate (dhfr, isolated from Tn7 or plasmid R67); the antibiotics kanamycin (nptII, encoding neomycin phosphotransfcrase) and hygromycin (hptIV, encoding hygromycin phosphotransferase, .isolated from E. coli);

TLS Online TPP Program

#Id: 9405

#Unit 11. Evolution and Behavior

Costs & benefits of territorial defense

Cost

Defending a territory requires time & energy and may, if aggressive defense is  needed, may pose some risk of injury.

Benefits‐

The improved access to resources represents  the 'benefit(s)' of territory defense.

TLS Online TPP Program

#Id: 6990

#Unit 5. Developmental Biology

Pluripotency A stem cell that has the potential to differentiate into any of three germ layers(endoderm , mesoderm & ectoderm). Eg-all embryonic cells

TLS Online TPP Program

#Id: 4575

#Unit 8. Inheritance Biology

TLS Online TPP Program

#Id: 2141

#Unit 9. Diversity of Life Forms

Phylogenetic relationships among species are estimated from similarities and differences.

TLS Online TPP Program

#Id: 6553

#Unit 7. System Physiology – Animal