Chromosome compaction involving progressive chromosome looping:

During prophase, condensin II binds DNA and extrudes large loops

In prometaphase, condensin I forms additional loops nested within the loops formed by condensin II

TLS Online TPP Program

#Id: 1614

#Unit 4. Cell Communication and Cell Signaling

Proinflammatory cytokines TNF-ᾳ, IL-1, and IL-6, produced by macrophages and dendritic cells.

TLS Online TPP Program

#Id: 1695

#Unit 4. Cell Communication and Cell Signaling

RAG1 is the predominant recombinase; it forms a complex with the RSS that is stabilized by the binding of RAG2.

RAG2 by itself does not exhibit detectable RSS binding activity

TLS Online TPP Program

#Id: 6772

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 9203

#Unit 11. Evolution and Behavior

Balance natural selection

Balancing selection is a type of natural selection that maintains genetic diversity in a population.

In balancing selection, two or more alleles are kept in balance, and therefore are  maintained in a population over the course of many generations.

TLS Online TPP Program

#Id: 9809

#Unit 6. System Physiology – Plant

hy1 and hy2 mutant are chromophore biosynthesis mutant: which fail to supress hypocotyl elongation