Group Living Has Advantages and Disadvantages

When animals live together in groups such as flocks or herds

Disadvantage- Group promote competition for food and increased transmission of parasites and other diseases.

Advantage - Benefits relate to group defense against predators through increased vigilance and through protection in numbers.

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#Id: 1695

#Unit 4. Cell Communication and Cell Signaling

RAG1 is the predominant recombinase; it forms a complex with the RSS that is stabilized by the binding of RAG2.

RAG2 by itself does not exhibit detectable RSS binding activity

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#Id: 1696

#Unit 4. Cell Communication and Cell Signaling

RAG1 subunit and contains two aspartic acid residues and one glutamic acid residue (D600, D708, and E962, respectively). This active site “DDE motif” is found in many enzymes that cleave DNA

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#Id: 1697

#Unit 4. Cell Communication and Cell Signaling

ZnA and ZnB on RAG1 are regions of the proteins that form zinc fingers, elongated protein domains stabilized by the coordination of a Zn ion.

TLS Online TPP Program

#Id: 1698

#Unit 4. Cell Communication and Cell Signaling

The ZnA region of the protein assists in the initial RAG1 binding to active chromatin via its ability to interact with histone H3.

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#Id: 1699

#Unit 4. Cell Communication and Cell Signaling

Granulocytes

1. Neutrophils

2. Basophils

3. Mast cells

4. Eosinophils

TLS Online TPP Program

#Id: 1700

#Unit 4. Cell Communication and Cell Signaling

Granulocytes can be seen by FACS.