From 033ecfcf0f11a5406a4b24cf8cff0a6f20bb1390 Mon Sep 17 00:00:00 2001 From: Charles Plessy Date: Thu, 9 Aug 2018 15:15:38 +0900 Subject: [PATCH] Number of chromosomes. --- biblio/10.1080_11250007309429248.mdwn | 10 ++++++++++ biblio/43261846.mdwn | 10 ++++++++++ tags/Oikopleura.mdwn | 6 +++++- 3 files changed, 25 insertions(+), 1 deletion(-) create mode 100644 biblio/10.1080_11250007309429248.mdwn create mode 100644 biblio/43261846.mdwn diff --git a/biblio/10.1080_11250007309429248.mdwn b/biblio/10.1080_11250007309429248.mdwn new file mode 100644 index 00000000..5c9a46e8 --- /dev/null +++ b/biblio/10.1080_11250007309429248.mdwn @@ -0,0 +1,10 @@ +[[!meta title="Chromosome form and number in the larvacea"]] +[[!tag Oikopleura]] + +Colombera D. & Fenaux R. + +Italian Journal of Zoology, 40:3-4, 347-353 + +Chromosome form and number in the larvacea + +[[!doi 10.1080/11250007309429248 desc="Reports 16 chromosomes in meiotic cells (8 haploid chromosomes)."]] diff --git a/biblio/43261846.mdwn b/biblio/43261846.mdwn new file mode 100644 index 00000000..73a7f772 --- /dev/null +++ b/biblio/43261846.mdwn @@ -0,0 +1,10 @@ +[[!meta title="Untersuchungen über die Gehäusebildung bei Appendicularien (Oikopleura dioica Fol)"]] +[[!tag Oikopleura]] + +Wilhelm Friedrich Körner + +Zeitschrift für Morphologie und Ökologie der Tiere Vol. 41, No. 1 (20.Mai 1952), pp. 1-53 + +Untersuchungen über die Gehäusebildung bei Appendicularien (Oikopleura dioica Fol) + +[Reports 3 haploid chromosomes in sperm and oocytes, one beign longer than the others. Also reports an observation of 7 chromosomes in a somatic mitotic cell.](https://www.jstor.org/stable/43261846) diff --git a/tags/Oikopleura.mdwn b/tags/Oikopleura.mdwn index cebb3e68..0f30823f 100644 --- a/tags/Oikopleura.mdwn +++ b/tags/Oikopleura.mdwn @@ -38,8 +38,12 @@ Phylogeny Genome ------ + - Germ cells contain 3 haploid chromosomes ([[Körner, 1952|biblio/43261846]]). + There are also intriguing observations of somatic mitotic cells with 7 + chromosomes (([[Körner, 1952|biblio/43261846]]) and meiotic cells with + 8 haploid chromosomes [[Colombera & Fenaux, 1973|biblio/10.1080_11250007309429248]]). - Each cell only contains 70 fg of DNA ([Animal Genome Size Database](http://www.genomesize.com/result_species.php?id=1308)). - - Size estimated to 72 ± 13 Mb (min 32.6~65 Mb) by [[Seo et al, + - Genome size estimated to 72 ± 13 Mb (min 32.6~65 Mb) by [[Seo et al, 2001|biblio/11752568]]. A 70.4 Mb genome "reference assembly" was later produced from the shotgun sequencing of sperm DNA from ~200 partially inbred males (11 successive sib-matings). Two distinct haplotypes were found -- 2.47.3