Most continuously varying characteristics are both polygenic and influenced by environmental factors, and these characteristics are said to be multifactorial. 

TLS Online TPP Program

#Id: 6478

#Unit 3. Fundamental Processes

Promoters that do not contain a TATA element are called TATA-less promoters. Surveys of promoter sequences suggest that 50% or more of promoters may be TATA-less.

TLS Online TPP Program

#Id: 4916

#Unit 1. Molecules and their Interaction Relevant to Biology

Lineweaver-Burk plot showing the effect of competitive inhibition; (b) the same, showing plots for several inhibitor concentrations at fixed enzyme concentrations.

TLS Online TPP Program

#Id: 4597

#Unit 13. Methods in Biology

The more metabolically active cells that are present in the culture, the more formazan will be generated, and so this assay provides a readout of the number of live cells as a function of time.

TLS Online TPP Program

#Id: 8231

#Unit 10. Ecological Principles

Endemic species - Species that live in a single, often isolated, location.

Cosmopolitan Species - with very large geographic ranges that can span several continents.

TLS Online TPP Program

#Id: 7503

#Unit 4. Cell Communication and Cell Signaling

RAG1 is expressed at all phases of the cell cycle, RAG2 is stable only in G0- or G1-phase cells.