Threshold characteristics display only two possible phenotypes—the trait is either present or absent.

TLS Online TPP Program

#Id: 1435

#Unit 4. Cell Communication and Cell Signaling

Four types of anchoring junctions are present in cells:

1. Adherens junctions

2. Desmosomes

3. Hemidesmosomes

4. Focal adhesions

TLS Online TPP Program

#Id: 1436

#Unit 4. Cell Communication and Cell Signaling

Adherens junctions 

Adhesion type- Cell-cell

Principal CAMs- Cadherins

Cytoskeletal attachment- Actin filaments

TLS Online TPP Program

#Id: 1437

#Unit 4. Cell Communication and Cell Signaling

Adherens junctions  functions as a tension cable that can internally brace the cell and thereby control its shape.

TLS Online TPP Program

#Id: 1438

#Unit 4. Cell Communication and Cell Signaling

Desmosomes

Adhesion type- Cell-cell

Cytoskeletal attachment- Intermediate filaments

TLS Online TPP Program

#Id: 1439

#Unit 4. Cell Communication and Cell Signaling

The key CAMs in desmosomes are the desmosomal cadherins, desmoglein and desmocollin.

TLS Online TPP Program

#Id: 1440

#Unit 4. Cell Communication and Cell Signaling

Desmosomes

Function- Strength, durability, signaling