Title |
Hox gene expression during postlarval development of the polychaete Alitta virens
|
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Published in |
EvoDevo, May 2013
|
DOI | 10.1186/2041-9139-4-13 |
Pubmed ID | |
Authors |
Nadezhda I Bakalenko, Elena L Novikova, Alexander Y Nesterenko, Milana A Kulakova |
Abstract |
Hox genes are the family of transcription factors that play a key role in the patterning of the anterior-posterior axis of all bilaterian animals. These genes display clustered organization and colinear expression. Expression boundaries of individual Hox genes usually correspond with morphological boundaries of the body. Previously, we studied Hox gene expression during larval development of the polychaete Alitta virens (formerly Nereis virens) and discovered that Hox genes are expressed in nereid larva according to the spatial colinearity principle. Adult Alitta virens consist of multiple morphologically similar segments, which are formed sequentially in the growth zone. Since the worm grows for most of its life, postlarval segments constantly change their position along the anterior-posterior axis. |
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