Arabidopsis that specify floral organ identity:

• APETALA1/ APETALA2

• APETALA3/PISTILLATA 

• AGAMOUS

TLS Online TPP Program

#Id: 1719

#Unit 4. Cell Communication and Cell Signaling

The other IgE receptor, designated FcεRII, or CD23, has a much lower affinity for IgE (Kd of 1 * 10 6 M -1 )

TLS Online TPP Program

#Id: 9616

#Unit 4. Cell Communication and Cell Signaling

Homodimerization

HER1 directly binds EGF which leads to formation of a homodimer of the HER1 extracellular domain

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#Id: 1058

#Unit 5. Developmental Biology

The genes encoding Islet1, Tbx4, and Pitx1 are expressed in presumptive hindlimbs.

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#Id: 8894

#Unit 2. Cellular Organization

Syntelic attachment 

Both kinetochores of a sister chromatid pair can attach to microtubules from the same pole

TLS Online TPP Program

#Id: 6471

#Unit 3. Fundamental Processes

The RNA polymerase I promoter consists of a core promoter and an upstream promoter element (UPE).