Transposon-free regions surrounding the NR2F1 gene or its closest homolog in six amniote species. Each panel shows a modified screenshot displaying a 90-kb genomic region from the UCSC Genome Browser (http://genome.ucsc.edu/). Horizontal red bars indicate TFRs, the NR2F1 gene is in blue, brown ticks indicate transposons, black bars in the Gaps track indicate gaps in the genome assembly, and dashed red boxes highlight large regions free of annotated transposons. (A) Human (chr5:92,910–93,000 kb, May 2004). (B) Mouse (chr13:74,743–74,833 kb, May 2004) showing five TFRs ≥ 5 kb (separated by one SINE and several small assembly gaps). (C) Rat (chr2:5,757–5,847 kb, June 2003). (D) Dog (chr3:18,489–18,569 kb, July 2004). The NR2F1 homolog is the closest match to the human mRNA (Non-Dog RefSeq Genes track). (E) Opossum (scaffold_19227:2,391–2,481 kb, October 2004). The NR2F1 homolog is the closest match to the human NR2F1 protein (Human Proteins track). (F) Chicken (chrW:2,350–2,440 kb, February 2004). The NR2F1 homolog is the closest match to the human mRNA (Non-Chicken RefSeq Genes track).
