HER1 & HER4, can form stable homodimers after binding a growth factor.

TLS Online TPP Program

#Id: 1825

#XL - T Zoology

TLS Online TPP Program

#Id: 8234

#XL - T Zoology

Negative density dependence occurs when the rate of population growth decreases as population density increases.

Ex - limited supply of resources, such as food, nesting sites, and physical space.

TLS Online TPP Program

#Id: 9838

#XL - R Botany

In the dark, COP1, an E3 ligase, ubiquitinates HY5.

TLS Online TPP Program

#Id: 9374

#XL - T Zoology

Like SOCS proteins in the cytokine signaling, 

Smad7 also recruits an E3 ubiquitin ligase that targets TGF-β receptors for degradation.

TLS Online TPP Program

#Id: 7039

#XL - T Zoology

Gradualism is Darwin’s proposition that the differences between even radically different organisms have evolved by small steps through intermediate forms, not by leaps