update README: literature

README.md

@@ -6,9 +6,13 @@ HiFi + HiC assembly (Jochen Rink)
 
 * Project: NGS-CC
 * Species: Platynereis dumerilii (Dumeril's clam worm)
-* Estimated genome size: 900M
+* Estimated genome size: 1000M
 * Classification: [NCBI taxonomy](https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?id=6359)
 * NCBI taxonomy ID: 6359
+* diploid (2n chromosomes) with a haploid set of n = 14 chromosomes
+* Literature:
+  -  [1](https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/abs/chromosomes-of-platynereis-dumerilii-polychaeta-nereidae/DDFDD48E13CF9282D24BCD018C01345C)
+  - [2](https://www.int-res.com/articles/ab2010/10/b010p193.pdf)
 
 ![Platynereis dumerilii](images/platynereis_dumerilii.jpg)
 
@@ -24,4 +28,7 @@ HiFi + HiC assembly (Jochen Rink)
 
 ## LongRanger
 
+## Karyotype
+
+![Platynereis dumerilii](images/platynereis_dumerilii_karyotype.png)
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