There are three basic modes of selection on a quantitative trait.

TLS Online TPP Program

#Id: 10068

#Unit 4. Cell Communication and Cell Signaling

In absence of Ca2+, 

the hinges can flex, the structure becomes floppy & adhesion fails

TLS Online TPP Program

#Id: 10069

#Unit 4. Cell Communication and Cell Signaling

Each classical cadherin molecule contains: 

A single TM domain

A short C-terminal cytosolic domain

Five extracellular “cadherin” domains (EC1–EC5)

TLS Online TPP Program

#Id: 10070

#Unit 4. Cell Communication and Cell Signaling

Three classes of classical cadherins: 

E-cadherin -present on epithelial cells

N-cadherin - present on nerve, muscle and lens cells

P-cadherin - present on cells in the placenta & epidermis

TLS Online TPP Program

#Id: 10071

#Unit 4. Cell Communication and Cell Signaling

Nonclassical cadherins include proteins:

Protocadherins found in the brain

Desmocollins and desmogleins that form desmosomes

TLS Online TPP Program

#Id: 10072

#Unit 4. Cell Communication and Cell Signaling

Epithelial-to-mesenchymal transition is associated with a reduction in the expression of E-cadherin.

TLS Online TPP Program

#Id: 10073

#Unit 4. Cell Communication and Cell Signaling

Snail suppresses the expression of E-cadherin is associated with the EMT