bithorax complex
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bithorax complex — A group of homeotic mutations of Drosophila that map to the bithorax region on chromosome III. The mutations all cause the third thoracic segment to develop like the second thoracic segment to varying extents. The genes of the bithorax complex… … Dictionary of molecular biology
Modern evolutionary synthesis — Evolutionary theory redirects here. For the sociological theory, see sociobiology. Part of a series on Evolutionary Biology … Wikipedia
Hox gene — Hox genes are a group of related genes that determine the basic structure and orientation of an organism.[1] Hox genes are critical for the proper placement of segment structures of animals during early embryonic development (e.g. legs, antennae … Wikipedia
Lewis , Edward B. — (1918–) American geneticist Lewis was educated at the University of Minnesota, and at the California Institute of Technology gaining his PhD in 1942. In 1946 he joined the Cal Tech faculty, where he served as Professor of Biology from 1956 until… … Scientists
Homeotic gene — Homeotic genes specify the anterior posterior axis and segment identity during early development of metazoan organisms. They are critical for the proper placement and number of embryonic segment structures (such as legs, antennae and eyes).The… … Wikipedia
Hox-Gen — Hox Gene sind eine Familie von regulativen Genen. Ihre Genprodukte sind Transkriptionsfaktoren, welche die Aktivität anderer, funktionell zusammenhängender Gene im Verlauf der Individualentwicklung (Morphogenese) steuern. Sie gehören also zu den… … Deutsch Wikipedia
Regional specification — In the field of developmental biology, regional specification is the process by which different areas are identified in the development of the early embryo. The process by which the cells become specified differs between organisms. Contents 1… … Wikipedia
Transvection (genetics) — Transvection is an epigenetic phenomenon that results from an interaction between an allele on one chromosome and the corresponding allele on the homologous chromosome. Transvection can lead to either gene activation or repression. Formally (see… … Wikipedia
homeotic mutant — (= homoeotic mutant) A mutant in which one body part, organ or tissue, is transformed into another part normally associated with another segment. Examples are the antennapedia and bithorax complex mutants of Drosophila … Dictionary of molecular biology
Ultrabithorax — Drosophila homeotic gene that is part of the bithorax complex. Mutations in Ubx affect parasegments 5 6, corresponding to the posterior thorax and anterior abdomen of the adult … Dictionary of molecular biology
