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#Id: 6885

#Unit 3. Fundamental Processes

DNA methylation and macroH2A contribute to the stable repression of the inactive X chromosome  A. Wutz and J. Gribnau, Curr. Opin. Genet. Dev. 17 (2007): 387–393. inactive specific transcript), which is stably expressed only on the inactive X chromosome.

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#Unit 4. Cell Communication and Cell Signaling

In Notch/Delta pathway, 

Notch is receptor protein, on a neighboring responding cell

TLS Online TPP Program

#Id: 10145

#Unit 6. System Physiology – Plant

EGTA [ethylene glycol-bis(b-aminoethyl ether)- N,N,N′,N′-tetraacetic acid], a compound that can chelate (form a complex with) Ca2+, prevents Ca2+ uptake by cells and inhibits root gravitropism.

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#Id: 7153

#Unit 6. System Physiology – Plant

Jasmonic acid needs to be conjugated first to an amino acid (here: isoleucine) to bind to COI1 as part of a SCFCOI1 protein complex. This complex targets JAZ, a repressor of transcriptio

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#Id: 7157

#Unit 5. Developmental Biology

Gray Crescent 

The region opposite the point of sperm entry, where the greatest displacement of cytoplasm occurs (Gastrulation will begin)

Vegetal rotation: Vegetal cells asymmetrically press up against the inner blastocoel roof on the dorsal side.

Bottle cell formation and invagination: Localized apical constriction at the dorsal blastopore lip creates anisotropic forces that foster invagination.

Involution and cell migration: The leading edge of invaginating cells crawls up onto the blastocoel roof.

Convergence and extension: The targeted medial-to-lateral intercalation of cells on the midline (convergence) drives anterior-posterior axis elongation (extension).