Regulation of the balance between Wnt and Notum signals underlie not only head-tail specification but also regulation of organ size.

 

TLS Online TPP Program

#Id: 3189

#Unit 3. Fundamental Processes

Some mitochondrial DNAs possess several D loops, reflecting the use of multiple origins. The same mechanism is employed in chloroplast DNA, where (in complex plants) there are two D loops.

TLS Online TPP Program

#Id: 5786

#Unit 7. System Physiology – Animal

Na+/I – symporter (NIS) is capable of producing intracellular I – concentrations that are 20– 40 times as great as the concentration in plasma

TLS Online TPP Program

#Id: 2214

#Unit 11. Evolution and Behavior

Populational change is Darwin’s hypothesis that evolution occurs by changes in the proportions (frequencies) of different variant kinds of individuals within a population.

TLS Online TPP Program

#Id: 6929

#Unit 8. Inheritance Biology

Deletions can be detected cytologically by studying the banding patterns in stained chromosomes. 

TLS Online TPP Program

#Id: 7031

#Unit 11. Evolution and Behavior

Chevalier de Lamarck - Inheritance of acquired characteristics