Carboniferous - First reptile

TLS Online TPP Program

#Id: 7415

#Unit 5. Developmental Biology

The homologue of TGF-β in Drosophila is Dpp.

TLS Online TPP Program

#Id: 7416

#Unit 5. Developmental Biology

Two regions of Drosophila chromosome III contain most of homeotic genes: Antennapedia complex Bithorax complex

TLS Online TPP Program

#Id: 7417

#Unit 5. Developmental Biology

Antennapedia complex, contains the homeotic genes: Labial (lab)

Antennapedia (Antp)

Sex combs reduced (scr), Deformed (dfd) 

Proboscipedia (pb)

TLS Online TPP Program

#Id: 7418

#Unit 5. Developmental Biology

Three protein-coding genes are found in bithorax complex: 

Ultrabithorax (Ubx)

Abdominal A (abdA) 

Abdominal B (AbdB) 

TLS Online TPP Program

#Id: 7419

#Unit 5. Developmental Biology

Ultrabithorax (Ubx), is required for the identity of the third thoracic segment.

TLS Online TPP Program

#Id: 7420

#Unit 5. Developmental Biology

one of Antennapedia’s functions is to repress the genes that would trigger antenna and eye development.