Handicap principle: Long tail feathers function as a sign of an individual’s genetic quality because the bearer must be able to afford this energetically costly trait. 

TLS Online TPP Program

#Id: 7198

#Unit 5. Developmental Biology

MHC-Peptide Interaction

TLS Online TPP Program

#Id: 8851

#Unit 2. Cellular Organization

Geminin is expressed in late G1; it binds to and inhibits Cdt1 preventing reloading of the MCM helicase.

TLS Online TPP Program

#Id: 7231

#Unit 5. Developmental Biology

Regulatory T cells inactivate traditional T cells

TLS Online TPP Program

#Id: 1426

#Unit 4. Cell Communication and Cell Signaling

I-domains also recognize CAMs on other cells,  ICAMs, VCAMs and participate in cell-cell adhesion.

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#Id: 4256

#Unit 12. Applied Biology

Passaging, is the removal of the medium and transfer of cells from a previous culture into fresh growth medium, a procedure that enables the further propagation of the cell line or cell strain.