RBX1 is a RING finger–containing protein that binds the E2 ubiquitin-conjugating enzyme.

TLS Online TPP Program

#Id: 4752

#Unit 5. Developmental Biology

The P1 cell develops autonomously without the presence of AB, generating all the cells it would normally make, and the result is the posterior half of an embryo.

TLS Online TPP Program

#Id: 4753

#Unit 5. Developmental Biology

AB cell in isolation makes only a small fraction of the cell types it would normally make.

TLS Online TPP Program

#Id: 4754

#Unit 5. Developmental Biology

The determination of the P1-derived somatic founder cells (MS, E, C, and D)are autonomous, with cell fates determined by internal cytoplasmic factors SKN-1, PAL-1, and PIE-1

TLS Online TPP Program

#Id: 4755

#Unit 5. Developmental Biology

The SKN-1 protein is a transcription factor that initiates the activation of those genes responsible for forming the pharynx and intestine.

TLS Online TPP Program

#Id: 4756

#Unit 5. Developmental Biology

The SKN-1 protein is a maternally expressed transcription factor that controls the fate of the P1 blastomere(P1🡪EMS 🡪MS), that generates the posterior pharynx.

TLS Online TPP Program

#Id: 4757

#Unit 5. Developmental Biology

Embryos from homozygous skn-1-deficient mothers lack both pharyngeal mesoderm & endoderm derivatives of EMS.