The overall change in allelic frequency is a balance between the opposing forces of forward mutation and reverse  mutation:

TLS Online TPP Program

#Id: 9446

#XL - T Zoology

The cytokines form a family of relatively small, secreted signaling molecules:

Contain about 160–200 AA

4 long, conserved α helices

Control growth and differentiation

TLS Online TPP Program

#Id: 2211

#XL - T Zoology

Darwin’s evolutionary theory- Evolution as such is the simple proposition that the characteristics of organisms change over time.

TLS Online TPP Program

#Id: 8153

#XL - Q Biochemistry

A second function of small GTPases in vesicle formation is in the pinching off of a completed vesicle from the parent membrane

TLS Online TPP Program

#Id: 9092

#XL - T Zoology

Pertussis toxin, produced by Bordetella pertussis, catalyzes ADP-ribosylation of the  subunit of Gαi, preventing GDP-GTP exchange and blocking inhibition of adenylyl cyclase.

TLS Online TPP Program

#Id: 5518

#XL - T Zoology

Net reproductive rate, the average number of female offspring produced by all the females in a population over the course of a generation.