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TLS Online TPP Program

#Id: 7051

Haldane’s rule: hybrid sterility or hybrid inviability is often limited to the heterogametic sex. 

#Unit 11. Evolution and Behavior #Emergence of evolutionary thoughts #Part B Pointers
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TLS Online TPP Program

#Id: 1399

#Unit 4. Cell Communication and Cell Signaling

The first myosin discovered
Myosin II, was isolated from skeletal muscle.
TLS Online TPP Program

#Id: 1400

#Unit 4. Cell Communication and Cell Signaling

Three classes of myosins:
Myosin I
Myosin II
Myosin V
TLS Online TPP Program

#Id: 1401

#Unit 4. Cell Communication and Cell Signaling

Myosin I
single head domain
Function- Membrane association, endocytosis
TLS Online TPP Program

#Id: 1402

#Unit 4. Cell Communication and Cell Signaling

Myosin II
Two heads and assembles into bipolar filaments
Small and non-processive
Function- Contraction 
TLS Online TPP Program

#Id: 1403

#Unit 4. Cell Communication and Cell Signaling

Myosin V
Two heads but does not assemble into filaments
Large and processive
Function- Organelle transport
TLS Online TPP Program

#Id: 1404

#Unit 4. Cell Communication and Cell Signaling

All Myosins move toward the (+) end of an actin filament except myosin VI.