TLS Online TPP Program

#Id: 1056

#Unit 5. Developmental Biology

Limb field represents a “harmonious equipotent system” wherein a cell can be instructed to form any part of the limb.

TLS Online TPP Program

#Id: 1057

#Unit 5. Developmental Biology

The gene encoding Tbx5 is transcribed in limb fields of the forelimbs.

TLS Online TPP Program

#Id: 1058

#Unit 5. Developmental Biology

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

TLS Online TPP Program

#Id: 1059

#Unit 5. Developmental Biology

Tbx stands for “T-box,” a specific DNA-binding domain.

TLS Online TPP Program

#Id: 1583

#Unit 5. Developmental Biology

Primitive Streak

The first morphological sign of gastrulation in amniotes

TLS Online TPP Program

#Id: 1584

#Unit 5. Developmental Biology

Primitive Streak; homologous to amphibian blastopore lip