Number of Barr bodies

Differential expression of a gene that depends on the sex of the parent that transmitted the gene.

TLS Online TPP Program

#Id: 6504

#Unit 3. Fundamental Processes

Once bound to Pol II, Ptefb phosphorylates the serine residue at position 2 of the CTD repeats. That phosphorylation event correlates with elongation. In addition, P-TEFb phosphorylates and thereby activates another protein, called SPT5, itself an elongation factor. Finally, TAT-SF1, yet another elongation factor, is recruited by P-TEFb. Thus, P-TEFb stimulates elongation in three separate ways.

TLS Online TPP Program

#Id: 8130

#Unit 1. Molecules and their Interaction Relevant to Biology

TLS Online TPP Program

#Id: 6790

#Unit 3. Fundamental Processes

The miRNAs used in RNAi are produced as large RNA primary transcripts called pri-miRNA that are self-complementary and can automatically fold into a double-strand hairpin structure.

TLS Online TPP Program

#Id: 8282

#Unit 1. Molecules and their Interaction Relevant to Biology

Hydrophobic interaction describes the influences that cause nonpolar substances to cluster together to minimize their contacts with water.

TLS Online TPP Program

#Id: 9969

#Unit 4. Cell Communication and Cell Signaling

Homologs

LRP in vertebrates = Arrow in Drosophila