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TLS Online TPP Program

#Id: 2163

An adaptation is a characteristic that enhances the survival or reproduction of organisms that bear it.


#Unit 11. Evolution and Behavior #Fitness and natural Selection #Part B Pointers
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TLS Online TPP Program

#Id: 1043

#Unit 5. Developmental Biology

The positional information needed to construct a limb has to function in a three-dimensional coordinate system:
Proximal-distal axis
Anterior-posterior axis
Dorsal-ventral axis
TLS Online TPP Program

#Id: 1044

#Unit 5. Developmental Biology

The limb bud is regionalized into 3 functional domains
1. Progress zone
2. Zone of polarizing activity
3. Apical ectodermal ridge
TLS Online TPP Program

#Id: 1045

#Unit 5. Developmental Biology

The highly proliferative mesenchyme that fuels limb bud growth is known as the progress zone mesenchyme
TLS Online TPP Program

#Id: 1046

#Unit 5. Developmental Biology

Fgf10 is the major active factor in the PZ.
TLS Online TPP Program

#Id: 1047

#Unit 5. Developmental Biology

The cells found within the most posterior region of the progress zone constitute the zone of polarizing activity.
TLS Online TPP Program

#Id: 1048

#Unit 5. Developmental Biology

Sonic hedgehog, is the major active factor in the ZPA.