The Class I enzymes share two homologous polypeptide segments that are components of a dinucleotide-binding fold (Rossmann fold, which is also present in many NAD+- and ATP-binding proteins.

TLS Online TPP Program

#Id: 1051

#Unit 5. Developmental Biology

Homeobox transcription factors, or Hox genes, play an essential role in specifying whether a particular mesenchymal cell will become stylopod, zeugopod, or autopod.

TLS Online TPP Program

#Id: 9385

#Unit 11. Evolution and Behavior

Fixed action pattern - A predictable series of actions triggered by a cue, sometimes called the key stimulus.

TLS Online TPP Program

#Id: 7184

#Unit 5. Developmental Biology

Antisense morpholinos to eliminate three BMP antagonists (Noggin, Chordin, and Follistatin) in Xenopus. The resulting embryos had catastrophic failure of dorsal development and lacked neural plates and dorsal mesoderm

TLS Online TPP Program

#Id: 1627

#Unit 4. Cell Communication and Cell Signaling

Psoriasin Binds and sequesters divalent cations

TLS Online TPP Program

#Id: 6630

#Unit 8. Inheritance Biology

Both genetic and physical maps provide information about the relative positions of and distances between genes. Genetic maps are based on rates of recombination and are measured in recombination frequencies (centiMorgans or map units).