Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Parameters of transvection. A schematic summary of the parameters determining the ability of enhancers (ovals) to communicate with promoters (bent arrows) in trans. The top and bottom schematics in each panel depict elements present in the two paired homologs. Triangles represent gypsy insulators. A graded series of examples is shown with transvection ranging from high (A), through (B) medium, (C) low, to undetectable (D). For more details see Discussion.
