In the frog (Xenopus laevis)

A gradient of the paracrine factor activin (a morphogen), causes concentration-dependent expression differences of two genes in unspecified cells.

TLS Online TPP Program

#Id: 6851

#Unit 3. Fundamental Processes

SANT-domain-containing proteins interact preferentially with unmodified histone tails.

TLS Online TPP Program

#Id: 4329

#Unit 11. Evolution and Behavior

Modern theory / Theory of chemical Evolution

-Explain by Oparin and Haldane

-Experimentation by urey and miller

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#Id: 5525

#Unit 10. Ecological Principles

Survivorship curves 

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#Id: 6979

#Unit 8. Inheritance Biology

Uniparental Disomy Inheritance of both chromosomes of a homologous pair from a single parent.  Many cases of uniparental disomy probably originate as trisomies. 

TLS Online TPP Program

#Id: 1724

#Unit 4. Cell Communication and Cell Signaling

CD23 binds not only to IgE, but also to the complement receptor CD21.