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: 8099

#XL - T Zoology

TLS Online TPP Program

#Id: 9738

#XL - R Botany

Members of the Poaceae family use benzoxazinoids an alkaloids derived from tryptophan as constitutively produced defensive secondary metabolites. 

TLS Online TPP Program

#Id: 8162

#XL - Q Biochemistry

For selective export of certain membrane proteins from the ER contain a di-acidic sorting signal (Asp-X-Glu, or DXE), which binds to the Sec24 subunit of the COPII

TLS Online TPP Program

#Id: 7736

#XL - Q Biochemistry

The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).

TLS Online TPP Program

#Id: 10307

#XL - Q Biochemistry

T-Cell Differentiation