Long introns.

diff --git a/tags/Oikopleura.mdwn b/tags/Oikopleura.mdwn
index cb71b327c8a62f11303ec7fa1cfd4624eb9d3d7b..1923e9b7499d019287e5a8848b9e17e8b7574acf 100644 (file)
--- a/tags/Oikopleura.mdwn
+++ b/tags/Oikopleura.mdwn
@@ -81,11 +81,13 @@ Transcriptome
    SL and that 42% of SL transcripts are monocistronic ([[Danks et al., 2015|biblio/25525214]]).
  - A `TCTAGA` promoter element is found in 73.5% of the non-trans-spliced genes detected with
    CAGE in testis ([[Danks et al, 2018|biblio/29482522]]).
- - Introns are very small (peak at 47 base pairs, 2.4% > 1 kb) [[Denoeud et
-   al., 2010|biblio/21097902]] and subjected to a large turnover: many ancestral
+ - Introns are very small (peak at 47 base pairs, 2.4% > 1 kb, [[Denoeud et
+   al., 2010|biblio/21097902]]) and subjected to a large turnover: many ancestral
    introns are lost, and many new species-specific introns found ([[Edvarsen et
    al., 2004|biblio/15638456]]).  Introns are gained by insertion of transposon-like elements and
-   by reverse splicing, ([[Denoeud et al., 2010|biblio/21097902]]).  
+   by reverse splicing, ([[Denoeud et al., 2010|biblio/21097902]]).  Larger introns tend
+   to be older, and among the large introns, the older contain repeat elements less frequently
+   than the newer ([[Denoeud et al., 2010|biblio/21097902]]). 
 
 
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