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Recently evolved enhancers dominate mammalian gene regulatory landscapes. Mostly exapted from ancestral DNA sequences, many are linked to genes under positive selection. Just as RNA-seq some years ago, unbiased enhancer mapping is on the verge of changing evolutionary research.
Zebrafish Hox genes are arranged in at least seven clusters, rather than the four clusters typical of vertebrates. This suggests that an additional genome duplication occurred on the fish lineage and explains why many gene families are typically about half the size in land vertebrates than they are in fish.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.