The optic vesicle secrete two paracrine factors:

 BMP4

 FGF8

TLS Online TPP Program

#Id: 3172

#Unit 3. Fundamental Processes

Deletion of the ter sites does not, however, prevent normal replication cycles from occurring, although it does affect segregation of the daughter chromosomes.

TLS Online TPP Program

#Id: 5036

#Unit 3. Fundamental Processes

The second component of the replicon model is the initiator protein.

This protein specifically recognizes a DNA element in the replicator and activates the initiation of replication

TLS Online TPP Program

#Id: 7423

#Unit 5. Developmental Biology

Dictyostelia (social amoebas) solitary haploid amoebae live on decaying logs, eating bacteria and reproducing by binary fission.

TLS Online TPP Program

#Id: 9768

#Unit 6. System Physiology – Plant

Flg22 also activates NADPH oxidases for the production of ROS are encoded by 10 respiratory burst oxidase homolog (Atrboh) genes. Two of the proteins, Atrboh D and F, are required

TLS Online TPP Program

#Id: 6981

#Unit 5. Developmental Biology

A stem cell retains the ability to divide and re-create itself while also having the ability to generate progeny capable of specializing into a more differentiated cell type.