Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

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.

View full-text article in PMC

. 2012 Apr;13(2):134–143. doi: 10.2174/138920212799860643

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

©2012 Bentham Science Publishers

This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.5/), which permits unrestrictive use, distribution, and reproduction in any medium, provided the original work is properly cited.

PMC Copyright notice

Fig. (3) — Gene order and positions of Hox genes in sea urchin (S. purpuratus) and human Hox clusters. The positions of the homeobox-coding exons are shown as boxes. The direction of transcription of S. purpuratus Hox genes are indicated above the boxes. All human Hox genes are transcribed in the direction from right to left. There are four Hox clusters (Hox A, B, C and D) in human. Note the difference in cluster sizes; S. purpuratus Hox genes are located in a region of ~600 kb, whereas most of the human Hox genes are included within ~100 kb.