In Notch/Delta pathway, 

Notch is receptor protein, on a neighboring responding cell

TLS Online TPP Program

#Id: 2165

#XL - T Zoology

TLS Online TPP Program

#Id: 2166

#XL - T Zoology

Adaptation has costly side effect

TLS Online TPP Program

#Id: 2167

#XL - T Zoology

Natural selection is any consistent difference in fitness among different classes of biological entities.

TLS Online TPP Program

#Id: 2168

#XL - T Zoology

Fitness is as the number of offspring an individual leaves in the next generation.

TLS Online TPP Program

#Id: 2169

#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.

TLS Online TPP Program

#Id: 2170

#XL - T Zoology

The components of fitness are survival and reproduction.