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+[[!meta title="Deeply conserved synteny resolves early events in vertebrate evolution."]]
+[[!tag evolution synteny chromosome]]
+
+Simakov O, Marlétaz F, Yue JX, O'Connell B, Jenkins J, Brandt A, Calef R, Tung CH, Huang TK, Schmutz J, Satoh N, Yu JK, Putnam NH, Green RE, Rokhsar DS.
+
+Nat Ecol Evol. 2020 Jun;4(6):820-830. doi:10.1038/s41559-020-1156-z
+
+Deeply conserved synteny resolves early events in vertebrate evolution.
+
+[[!pmid 32313176 desc="Most of the 19 amphioxus (lancelet) chromosomes directly correspond to one of the 17 ancestral chordate linkage groups.  Pattern of paralogue elimination show that autotetraploidy was followed by allotetraploidy in bony vertebrates."]]

diff --git a/tags/synteny.mdwn b/tags/synteny.mdwn
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@@ -9,7 +9,8 @@ were enriched near CTCF-binding events.
 distribution follows a power law and explain it with a model that requires
 breakpoints to be in open regions (ENCODE) interacting with each other (Hi-C).
 
-The ancestral chordate has 17 chromosomes according to [[Putnam and coll, 2008|biblio/18563158]].
+The ancestral chordate has 17 chromosomes according to amphioxus assemblies of
+[[Putnam and coll, 2008|biblio/18563158]] and [[Simakov and coll., 2020|biblio/32313176]].
 
 The ancestral amniote has 49 chromosomes according to [[Sacerdot and coll., 2018|biblio/30333059]].