Association with ARF6 activates A1, which catalyzes the transfer of ADP-ribose from NAD to the critical Arg residue in the P loop of the  subunit of Gαs. 

TLS Online TPP Program

#Id: 9180

#XL - T Zoology

Average fitness

In a species, only 1 of every 1000 seeds survives to reproductive age, and that those that survive produce an average of 3000 seeds. 

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#Id: 9181

#XL - T Zoology

TLS Online TPP Program

#Id: 9182

#XL - T Zoology

Selection coefficient

A related variable is the selection coefficient (s), which is the relative intensity of selection against a  genotype

TLS Online TPP Program

#Id: 9183

#XL - T Zoology

The selection gradient measures the strength of directional selection acting on a quantitative trait.

TLS Online TPP Program

#Id: 9184

#XL - T Zoology

TLS Online TPP Program

#Id: 9185

#XL - T Zoology

Proportional contribution of genotypes to population