ABa and ABp are equivalent cells whose fates are determined by their positions in the embryo (if one experimentally reverses the positions of these two cells, their fates are similarly reversed and a normal embryo forms)

TLS Online TPP Program

#Id: 5764

#Unit 10. Ecological Principles

Simpson’s diversity index DS and species diversity are negatively related.

TLS Online TPP Program

#Id: 2123

#Unit 8. Inheritance Biology

Pericentric inversion Chromosome inversion that includes the centromere in the inverted region.

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#Id: 1715

#Unit 4. Cell Communication and Cell Signaling

Properties of allergens

 a. Allergens are either protein or glycoprotein in nature, with multiple antigenic sites.

 b. Many allergens have intrinsic enzymatic activity that affects the immune response.

c.  Many allergens contain potential pathogen associated molecular patterns.

d.  Many allergens enter the host via mucosal tissues at very low concentrations, which tend to predispose the individual to generate TH2 responses, leading to B-cell secretion of IgE.

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#Id: 7386

#Unit 5. Developmental Biology

A third set of maternal genes whose proteins generate the unsegmented extremities of the anterior-posterior axis: the acron (the terminal portion of the head that includes the brain) and the telson (tail).

TLS Online TPP Program

#Id: 6639

#Unit 8. Inheritance Biology

Coefficient of coincidence  Ratio of observed double crossovers to expected double crossovers.